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Requirement that quantum states' time evolution operators are unitary transformations
generalizations of or departures from unitarity are part of speculations about theories that may go beyond quantum mechanics. A unitarity bound is any inequality that
Unitarity
Topics referred to by the same term
Unitarism may refer to: Political unitarism, political doctrine advocating for creation of a unitary state Ethnic unitarism, a form of ethnic homogenization
Unitarism
Gauge fixing used in theories with spontaneous symmetry breaking
In theoretical physics, the unitarity gauge or unitary gauge is a particular choice of a gauge fixing in a gauge theory with a spontaneous symmetry breaking
Unitarity_gauge
Concepts that enforce fully unified system of government
Political unitarism designates various theories, concepts or policies that advocate or enforce a fully unified and centralized system of government, with
Political_unitarism
Malaysian university
UNITAR International University (UNITAR) is a private university in Selangor, Malaysia. The university was established in 1997 and its main campus, which
UNITAR International University
UNITAR_International_University
Puzzle of disappearance of information in a black hole
this conclusion leads to the loss of unitarity. Banks, Susskind and Peskin argue that, in some cases, loss of unitarity also implies violation of energy–momentum
Black hole information paradox
Black_hole_information_paradox
Geometric structure used in certain particle interactions
quantum mechanical properties of locality and unitarity. In amplituhedron theory, locality and unitarity arise as a direct consequence of positivity. They
Amplituhedron
Topics referred to by the same term
Look up unitar in Wiktionary, the free dictionary. A unitar is a one-stringed guitar. UNITAR may also refer to: United Nations Institute for Training and
Unitar_(disambiguation)
Teaching institute of the United Nations
Nations Institute for Training and Research (UNITAR) is a dedicated training arm of the United Nations system. UNITAR provides training and capacity development
United Nations Institute for Training and Research
United_Nations_Institute_for_Training_and_Research
Quantum field theory enjoying conformal symmetry
field theories, unitarity is equivalent to reflection positivity of correlation functions: one of the Osterwalder-Schrader axioms. Unitarity implies that
Conformal_field_theory
Aspect of field theory
along with other constraints such as unitarity and Lorentz invariance. Non-standard kinetic terms that break unitarity or are not positive-definite occur
Kinetic_term
Theory extending Einstein gravity
also been shown to feature a non-perturbative ultraviolet fixed point. Unitarity, essential to a theory of quantum gravity, has been established in appropriate
Quadratic_gravity
One-stringed guitar
The unitar is a one-string electric guitar. Although rare, the one-string guitar is sometimes heard, particularly in Delta blues, where improvised folk
Unitar_(instrument)
Change of basis applied in quantum computing
In quantum computing, the quantum Fourier transform (QFT) is a linear transformation on quantum bits, and is the quantum analogue of the discrete Fourier
Quantum_Fourier_transform
Unitary matrix containing information on the weak interaction
000036}^{+0.000031}\end{bmatrix}}.} Using those values, one can check the unitarity of the CKM matrix. In particular, we find that the first-row matrix elements
Cabibbo–Kobayashi–Maskawa matrix
Cabibbo–Kobayashi–Maskawa_matrix
Judging another culture by the values and standards of one's own culture
Ethnocentrism in social science and anthropology—as well as in colloquial English discourse—is the application of one's own culture or ethnicity as a frame
Ethnocentrism
Approach to the effective management of people in a company
One of the important goals of HRM is establishing with the notion of unitarism (seeing a company as a cohesive whole, in which both employers and employees
Human_resource_management
Axiom of probability theory
Unit measure is an axiom of probability theory that states that the probability of the entire sample space is equal to one (unity); that is, P(S)=1 where
Unit_measure
Constituent polity of the United States
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental
U.S._state
Formulation to quantize gauge field theories in physics
guaranteed to have no effect on physical observables. This ensures the unitarity of the S-matrix. The mechanism is a direct consequence of the nilpotent
BRST_quantization
Generalization of the discrete Fourier transform
In mathematics, the Fourier transform on finite groups is a generalization of the discrete Fourier transform from cyclic to arbitrary finite groups. The
Fourier transform on finite groups
Fourier_transform_on_finite_groups
Interference effect of two photons
transformations hold for the creation operators. Unitarity of the transformation implies unitarity of the matrix. Physically, this beam splitter transformation
Hong–Ou–Mandel_effect
Generalisation of Fourier transform to any ring
In mathematics, the discrete Fourier transform over a ring generalizes the discrete Fourier transform (DFT), of a function whose values are commonly complex
Discrete Fourier transform over a ring
Discrete_Fourier_transform_over_a_ring
United Nations Satellite Centre
It is hosted at the United Nations Institute for Training and Research (UNITAR), with the mission to promote evidence-based decision making for peace,
UNOSAT
Quality of diverse or different cultures
Cultural diversity is the quality of diverse or different cultures, as opposed to monoculture. It has a variety of meanings in different contexts, sometimes
Cultural_diversity
Conjecture in theoretical physics
content, quantum field theory itself has no content beyond analyticity, unitarity, cluster decomposition, and symmetry. This can be put more precisely in
Folk_theorem_(physics)
Mathematical operation
In mathematics, in the area of harmonic analysis, the fractional Fourier transform (FRFT) is a family of linear transformations generalizing the Fourier
Fractional_Fourier_transform
Theorem in mathematics
Although the term "Parseval's theorem" is often used to describe the unitarity of any Fourier transform, especially in physics, the most general form
Parseval's_theorem
Time travel using quantum mechanics
about how it interacts with fundamental principles such as unitarity and linearity. Unitarity ensures that the total probability of all possible outcomes
Quantum mechanics of time travel
Quantum_mechanics_of_time_travel
Thought experiment, to justify Bayesian probability
horse winning, add up to a number greater than 1, violating the axiom of unitarity: Whichever horse wins in this example, the bookmaker will pay out $200
Dutch_book_arguments
Country in northern Europe
Specialized agencies FAO ICAO IFAD ILO IMF IMO ITU MINUSMA UNESCO UNIDO UPU UNITAR UNMISS UNRWA UNWTO WHO WIPO WMO World Bank Group IBRD IDA IFC MIGA Italics
Norway
Theorem in harmonic analysis
theorem; often used in the fields of science and engineering, proving the unitarity of the Fourier transform. The theorem states that the integral of a function's
Plancherel_theorem
Type of local operator in conformal field theory
theories, dimensions of primary operators satisfy lower bounds called the unitarity bounds. Roughly, these bounds say that the dimension of an operator must
Primary_field
Constraint on particle cross sections
center-of-mass energy (s is one of the three Mandelstam variables). Unitarity (physics) § Unitarity bounds S-matrix theory Regge theory The Froissart bound on
Froissart_bound
Division of elementary particles
mass in 2012 was 100 GeV, with a proposed upper bound of 1.2 TeV from unitarity considerations. Unsolved problem in physics Why are there three generations
Generation_(particle_physics)
Invariance under simultaneous charge conjugation, parity transformation and time reversal
violation. Non-unitary theories, such as proposals where black holes violate unitarity, could also violate CPT. As a technical point, fields with infinite spin
CPT_symmetry
American theoretical physicist (1933–2021)
theorem Minimal subtraction scheme Soft graviton theorem Technicolor Unitarity gauge Spouse Louise Goldwasser (m. 1954) Children 1 Awards Heineman
Steven_Weinberg
Qatari lawyer
2018-08-15. "H.E. Dr. Ali Bin Fetais Al-Marri". UNITAR. Retrieved 2021-04-07. "H.E. Dr. Ali Bin Fetais Al-Marri". UNITAR. Retrieved 2021-04-09. "UN selects A-G
Ali_bin_Fetais_Al-Marri
Proposed system of global governance
World government Nationalism Internationalism Globalism Power structure Unitarism Unitary state Empire Principality Client state Associated state Dependent
World_constitution
Species of tree
Commons has media related to Tilia miqueliana. "Database of Hibaku Jumoku Atomic-Bombed Trees of Hiroshima" (PDF). UNITAR. Retrieved 12 October 2014. v t e
Tilia_miqueliana
Algebra describing 2D conformal symmetry
Friedan, D., Qiu, Z. and Shenker, S. (1984). "Conformal invariance, unitarity and critical exponents in two dimensions". Physical Review Letters. 52
Virasoro_algebra
Specialized agency of the United Nations
UNODC · UNMAS · UNOCT · CTC · OPCW · CTBTO PrepCom Research & training UNITAR · UNRISD · UNIDIR · UNU · UNSSC · UNICRI Human rights UNHRC · OHCHR · UPR ·
World_Health_Organization
System or group governing an organized community
Theories of political behavior Subseries Electoral systems Elections voting Unitarism Federalism Government (forms / Governance) Ideology Culture Political
Government
Formulations of quantum mechanics
In quantum mechanics, dynamical pictures (or representations) are the multiple equivalent ways to mathematically formulate the dynamics of a quantum system
Dynamical_pictures
Elementary particle involved with rest mass
theories are highly tentative and face significant problems related to unitarity, but may be viable if combined with additional features such as large
Higgs_boson
Formulation of quantum mechanics
than the Hamiltonian. Possible downsides of the approach include that unitarity (this is related to conservation of probability; the probabilities of
Path_integral_formulation
Authority related to political life
Theories of political behavior Subseries Electoral systems Elections voting Unitarism Federalism Government (forms / Governance) Ideology Culture Political
Political_authority
Duality between theories of gravity on anti-de Sitter space and conformal field theories
usually referred to as unitarity of time evolution. The apparent contradiction between Hawking's calculation and the unitarity postulate of quantum mechanics
AdS/CFT_correspondence
and Research Ausbildungs- und Forschungsinstitut der Vereinten Nationen UNITAR 314 United Nations Development Programme Entwicklungsprogramm der Vereinten
Vehicle registration plates of Germany
Vehicle_registration_plates_of_Germany
Period of social discontinuity
World government Nationalism Internationalism Globalism Power structure Unitarism Unitary state Empire Principality Client state Associated state Dependent
Interregnum
Political system with three or more parties
Theories of political behavior Subseries Electoral systems Elections voting Unitarism Federalism Government (forms / Governance) Ideology Culture Political
Multi-party_system
UNEP/GRID-Arendal UNEP-WCMC UNFPA UN-HABITAT UNHCR UNHRC UNICEF UNICRI UNIDIR UNITAR UN-Oceans UNODC UNOPS UNOSAT UNRISD UNRWA UNSDG UNSSC UNU UNU-CRIS UNU-OP
Proposals for the United States to withdraw from the United Nations
Proposals_for_the_United_States_to_withdraw_from_the_United_Nations
Tree that survived the 1945 atomic bombings of Japan
damaged. In 2011, the United Nations Institute for Training and Research (UNITAR) in Hiroshima published a report and database detailing the surviving trees
Hibakujumoku
American theoretical particle physicist
of "generalized unitarity as a means for obtaining loop amplitudes from on-shell tree amplitudes". The method of generalized unitarity provided new insights
Zvi_Bern
Mathematical transform that expresses a function of time as a function of frequency
L^{2}} , and the various features of the Fourier transform, such as its unitarity, are easily inferred for Gaussians. Many of the properties of the Fourier
Fourier_transform
Hypothetical black-hole event-horizon phenomenon
one of three time-tested principles: Einstein's equivalence principle, unitarity, or existing quantum field theory. However, it is now accepted that an
Firewall_(physics)
Concept in physics
175. Lee, T.D.; Wick, G.C. (February 1969). "Negative metric and the unitarity of the S-matrix". Nuclear Physics B. 9 (2): 209–243. Bibcode:1969NuPhB
Non-Hermitian quantum mechanics
Non-Hermitian_quantum_mechanics
Global intergovernmental organization
UNODC · UNMAS · UNOCT · CTC · OPCW · CTBTO PrepCom Research & training UNITAR · UNRISD · UNIDIR · UNU · UNSSC · UNICRI Human rights UNHRC · OHCHR · UPR ·
United_Nations
1980 session of the United Nations General Assembly
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Sixth emergency special session of the United Nations General Assembly
Sixth_emergency_special_session_of_the_United_Nations_General_Assembly
Intergovernmental organisation (1920–1946)
UNODC · UNMAS · UNOCT · CTC · OPCW · CTBTO PrepCom Research & training UNITAR · UNRISD · UNIDIR · UNU · UNSSC · UNICRI Human rights UNHRC · OHCHR · UPR ·
League_of_Nations
Compact astronomical body
200410203. Avery, Steven G.; Chowdhury, Borun D.; Puhm, Andrea (2013). "Unitarity and Fuzzball Complementarity: "Alice Fuzzes but May Not Even Know It!""
Black_hole
Political party in Romania
The Social Democratic Party of Romania (Romanian: Partidul Social Democrat din România, or Partidul Social Democrat, PSD) was a Marxist social-democratic
Social Democratic Party of Romania (1910–1918)
Social_Democratic_Party_of_Romania_(1910–1918)
modular tensor category with additional data that reflects the principle of unitarity in quantum mechanics. Unitary modular tensor categories are relevant to
Unitary modular tensor category
Unitary_modular_tensor_category
Calculation rule in quantum mechanics
)}=\langle \psi |F_{i}|\psi \rangle .} The Born rule, together with the unitarity of the time evolution operator e − i H ^ t {\displaystyle e^{-i{\hat {H}}t}}
Born_rule
policy of the EU Related topics Arctic Command Defence Command Politics of Denmark Politics of the Faroe Islands Unitarism Self rule Other countries v t e
1991 Greenlandic general election
1991_Greenlandic_general_election
Variables used in scattering processes
of the Pion-Nucleon Scattering Amplitude from Dispersion Relations and Unitarity". Physical Review. 112 (4): 1344. Bibcode:1958PhRv..112.1344M. doi:10
Mandelstam_variables
UNODC · UNMAS · UNOCT · CTC · OPCW · CTBTO PrepCom Research & training UNITAR · UNRISD · UNIDIR · UNU · UNSSC · UNICRI Human rights UNHRC · OHCHR · UPR ·
Third session of the United Nations General Assembly
Third_session_of_the_United_Nations_General_Assembly
Network is part of the United Nations Institute for Training and Research (UNITAR). The Network comprises 25 International Training Centres (CIFALs) and aims
CIFAL
South African public health official
negotiator." On the same day, she was named Best Negotiator of the Year 2025 by UNITAR and the Doha Forum. In February 2026, she and fellow INB co-chair Anne-Claire
Precious_Matsoso
American theoretical physicist, futurist and author
University Princeton University Institute for Advanced Study Thesis Spin and Unitarity in Dual Resonance Models (1972) Doctoral advisor Stanley Mandelstam Robert
Michio_Kaku
organization for volunteer computing formed as a partnership between CERN, UNITAR, and the University of Geneva. In August 2011, a new version of the BOINC-based
Citizen_Cyberscience_Centre
Study of election administration
Theories of political behavior Subseries Electoral systems Elections voting Unitarism Federalism Government (forms / Governance) Ideology Culture Political
Election_science
Topics referred to by the same term
morphism Unitary operator Unitary transformation Unitary representation Unitarity (physics) E-unitary inverse semigroup Unitary authority Unitary state
Unitary
For-profit university in Tampa, Florida, US
Schiller International University Partners with UNITAR UNITAR – Master’s and Postgraduate Diplomas Schiller y UNITAR se unen para mejorar la formación (Éxito
Schiller International University
Schiller_International_University
UNODC · UNMAS · UNOCT · CTC · OPCW · CTBTO PrepCom Research & training UNITAR · UNRISD · UNIDIR · UNU · UNSSC · UNICRI Human rights UNHRC · OHCHR · UPR ·
Sixtieth session of the United Nations General Assembly
Sixtieth_session_of_the_United_Nations_General_Assembly
Bosnian political alliance
Homeland Domovina Leader Collective leadership Ideology Unitarism Conservatism Pro-Europeanism Internal factions Bosniak nationalism Croatian nationalism
Homeland_(political_alliance)
Government system where political power lies with the people
World government Nationalism Internationalism Globalism Power structure Unitarism Unitary state Empire Principality Client state Associated state Dependent
Democracy
Official representing the interests of the public
Theories of political behavior Subseries Electoral systems Elections voting Unitarism Federalism Government (forms / Governance) Ideology Culture Political
Ombudsman
UNODC · UNMAS · UNOCT · CTC · OPCW · CTBTO PrepCom Research & training UNITAR · UNRISD · UNIDIR · UNU · UNSSC · UNICRI Human rights UNHRC · OHCHR · UPR ·
Thirty-seventh session of the United Nations General Assembly
Thirty-seventh_session_of_the_United_Nations_General_Assembly
Head of government in the Kingdom of Denmark
Arctic Command Defence Command Politics of the Faroe Islands Politics of Greenland Unitarism Home rule Self rule Denmark portal Other countries v t e
Prime_Minister_of_Denmark
theory, there are no local quantities at all. Heisenberg proposed to use unitarity to determine the S-matrix. In all conceivable situations, the sum of the
History_of_string_theory
South African entrepreneur
Africa. March 2, 2021. "UNITAR launches the Global Surgery Foundation (GSF) at the World Economic Forum (WEF) in Davos". UNITAR. "Black Excellence: Rali
Rali_Mampeule
International Court of Justice proceeding
UNEP/GRID-Arendal UNEP-WCMC UNFPA UN-HABITAT UNHCR UNHRC UNICEF UNICRI UNIDIR UNITAR UN-Oceans UNODC UNOPS UNOSAT UNRISD UNRWA UNSDG UNSSC UNU UNU-CRIS UNU-OP
ICJ case on Israel's occupation of the Palestinian territories
ICJ_case_on_Israel's_occupation_of_the_Palestinian_territories
Women's roles and impact within peacekeeping efforts
UNEP/GRID-Arendal UNEP-WCMC UNFPA UN-HABITAT UNHCR UNHRC UNICEF UNICRI UNIDIR UNITAR UN-Oceans UNODC UNOPS UNOSAT UNRISD UNRWA UNSDG UNSSC UNU UNU-CRIS UNU-OP
Women_in_peacekeeping
Approach in diplomacy and politics
Theories of political behavior Subseries Electoral systems Elections voting Unitarism Federalism Government (forms / Governance) Ideology Culture Political
Realpolitik
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Forty-third session of the United Nations General Assembly
Forty-third_session_of_the_United_Nations_General_Assembly
Political compromise on internal divisions in the Kingdom of Yugoslavia
policy makers was the end of the ideology of centralism (also called unitarism). By the end of the 1930s, most Serbian politicians favored a federal
Cvetković–Maček_Agreement
Arctic Command Defence Command Politics of the Faroe Islands Politics of Greenland Unitarism Home rule Self rule Denmark portal Other countries v t e
List_of_monarchs_of_Denmark
Theory in particle physics
analyticity would determine the scattering amplitude (the forces), while unitarity would determine the self-consistent quantum corrections in a way analogous
Bootstrap_model
Matrix representing the effect of scattering on a physical system
= I {\displaystyle S^{*}S=I} This condition, in conjunction with the unitarity relation, implies that the S-matrix is symmetric, as a result of time
S-matrix
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Forty-fourth session of the United Nations General Assembly
Forty-fourth_session_of_the_United_Nations_General_Assembly
Specialized agency of the United Nations
UNODC · UNMAS · UNOCT · CTC · OPCW · CTBTO PrepCom Research & training UNITAR · UNRISD · UNIDIR · UNU · UNSSC · UNICRI Human rights UNHRC · OHCHR · UPR ·
UN_Tourism
Arctic policy of the EU Related topics Arctic Command Defence Command Politics of Denmark Politics of Greenland Unitarism Home rule Other countries v t e
Cabinet_of_Edmund_Joensen_II
UNEP/GRID-Arendal UNEP-WCMC UNFPA UN-HABITAT UNHCR UNHRC UNICEF UNICRI UNIDIR UNITAR UN-Oceans UNODC UNOPS UNOSAT UNRISD UNRWA UNSDG UNSSC UNU UNU-CRIS UNU-OP
List of United Nations resolutions concerning Tibet
List_of_United_Nations_resolutions_concerning_Tibet
Five countries influential in world affairs
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Permanent members of the United Nations Security Council
Permanent_members_of_the_United_Nations_Security_Council
Danish territorial election
Arctic policy of the EU Related topics Arctic Command Defence Command Politics of Denmark Politics of Greenland Unitarism Home rule Other countries v t e
2026_Faroese_general_election
International organization in New York, United States
UNODC · UNMAS · UNOCT · CTC · OPCW · CTBTO PrepCom Research & training UNITAR · UNRISD · UNIDIR · UNU · UNSSC · UNICRI Human rights UNHRC · OHCHR · UPR ·
United Nations Department of Economic and Social Affairs
United_Nations_Department_of_Economic_and_Social_Affairs
Activities associated with group decisions
Theories of political behavior Subseries Electoral systems Elections voting Unitarism Federalism Government (forms / Governance) Ideology Culture Political
Politics
PRTR Data (OECD) Resource Centre for PRTR Release Estimation Techniques (OECD) PRTR Virtual Classroom (UNITAR) PRTR Capacity Building Library (UNITAR)
European Pollutant Release and Transfer Register
European_Pollutant_Release_and_Transfer_Register
Chamber of a bicameral legislature
Theories of political behavior Subseries Electoral systems Elections voting Unitarism Federalism Government (forms / Governance) Ideology Culture Political
Lower_house
UNITARITY
UNITARITY
UNITARITY
UNITARITY
Boy/Male
Muslim
Good luck
Surname or Lastname
English
English : variant of Goodyear.
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi
Dawn
Boy/Male
Hindu, Indian, Traditional
Sky; Heaven
Boy/Male
Arabic, Muslim, Pashtun
Dear; Beloved
Boy/Male
Hindu
The Moon
Girl/Female
Hindu
Girl with humanity, One who poses all best qualities
Surname or Lastname
English
English : variant of Hitchcock. Compare Hedgecock.
Female
Finnish
Finnish name ILTA means "night."
Girl/Female
German
Peaceful Victory
UNITARITY
UNITARITY
UNITARITY
UNITARITY
UNITARITY