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Solitons in Euclidean spacetime
An instanton (or pseudoparticle) is a notion appearing in theoretical and mathematical physics. An instanton is a classical solution to equations of motion
Instanton
Type of Yang–Mills instanton
In theoretical physics, the BPST instanton is the instanton with winding number 1 found by Alexander Belavin, Alexander Polyakov, Albert Schwarz and Yu
BPST_instanton
Four-dimensional complete Riemannian manifold satisfying the vacuum Einstein equations
In mathematical physics and differential geometry, a gravitational instanton is a four-dimensional complete Riemannian manifold satisfying the vacuum
Gravitational_instanton
Half-instanton solution of Yang–Mills theory
A meron or half-instanton is a Euclidean space-time solution of the Yang–Mills field equations. It is a singular non-self-dual solution of topological
Meron_(physics)
Finite energy solutions in Euclidean spacetime
In quantum field theory, periodic instantons are finite energy solutions of Euclidean-time field equations which communicate (in the sense of quantum tunneling)
Periodic_instantons
Partial differential equations whose solutions are instantons
settings, the self-dual or anti-self-dual finite-action solutions are called instantons. The Yang–Mills moduli space was used by Simon Donaldson to prove Donaldson's
Yang–Mills_equations
Non-perturbative path integral approximation
In quantum field theory, the instanton fluid model is a model of Wick rotated Euclidean quantum chromodynamics. If we examine the path integral of the
Instanton_fluid
Lowest energy state in quantum chromodynamics
BPST-like instantons. Although only the solutions with one or few instantons (or anti-instantons) are known exactly, a dilute gas of instantons and anti-instantons
QCD_vacuum
Quartic potential in quantum mechanics
double-well potential serves as a model to illustrate the concept of instantons as a pseudo-classical configuration in a Euclidean field theory. In the
Double-well_potential
Study of vector bundles, principal bundles, and fibre bundles
equations of motion for a classical field theory, particles known as instantons. Gauge theory has found uses in constructing new invariants of smooth
Gauge_theory_(mathematics)
Method in general relativity
the Gibbons–Hawking ansatz is a method of constructing gravitational instantons introduced by Gary Gibbons and Stephen Hawking (1978, 1979). It gives
Gibbons–Hawking_ansatz
Study in mathematical gauge theory
topology of smooth 4-manifolds using moduli spaces of anti-self-dual instantons. It was started by Simon Donaldson (1983) who proved Donaldson's theorem
Donaldson_theory
Mathematical instability in string theory
can spontaneously collapse through the nucleation of a gravitational instanton. This bubble of nothing has no interior, not even spacetime. Bubbles of
Bubble_of_nothing
Method of constructing instanton solutions
the ADHM construction or monad construction is the construction of all instantons using methods of linear algebra by Michael Atiyah, Vladimir Drinfeld,
ADHM_construction
Symplectic topology tool
a symplectic manifold with the symplectic action functional. For the (instanton) version for three-manifolds, it is the space of SU(2)-connections on
Floer_homology
Solution to field equations in Standard Model particle physics
either tunnel through the barrier (in which case the transition is an instanton-like process) or must for a reasonable period of time be brought up to
Sphaleron
Quantum field theory
The dx1⊗σ3 coefficient of a BPST instanton on the (x1,x2)-slice of ℝ4 where σ3 is the third Pauli matrix (top left). The dx2⊗σ3 coefficient (top right)
Yang–Mills_theory
German mathematician
symplectomorphism. Because of his work on Arnold's conjecture and his development of instanton homology, he achieved wide recognition and was invited as a plenary speaker
Andreas_Floer
List of particles in matter including fermions and bosons
experiment. There are also instantons, field configurations which are a local minimum of the Yang–Mills field equation. Instantons are used in nonperturbative
List_of_particles
Theory in supersymmetric gauge theory
perturbative loop calculation and the second is the instanton part where k {\displaystyle k} labels fixed instanton numbers. In theories whose gauge groups are
Seiberg–Witten_theory
Compact astronomical body
algebra Kac–Moody algebra Wess–Zumino–Witten model Gauge theory Anomalies Instantons Chern–Simons form Bogomol'nyi–Prasad–Sommerfield bound Exceptional Lie
Black_hole
Dutch theoretical physicist
formula for the masses of mesons. He also studied the role of so-called instanton contributions in QCD. His calculations showed that these contributions
Gerard_'t_Hooft
Non-conservation of chiral current in physics
non-trivial homotopy group, or, in physics terminology, in terms of instantons. Instantons are a form of topological soliton; they are a solution to the classical
Chiral_anomaly
Special functions used to build correlation functions in 2D CFTs
[hep-th]. Nekrasov, Nikita (2004). "Seiberg-Witten Prepotential from Instanton Counting". Advances in Theoretical and Mathematical Physics. 7 (5): 831–864
Virasoro_conformal_block
Finite temperature instanton
caloron is the finite temperature generalization of an instanton. At zero temperature, instantons are the name given to solutions of the classical equations
Caloron
Yang–Mills theory vacuum state
equations of motion called instantons. They are responsible for tunnelling between different topological vacua with an instanton with winding number ν {\displaystyle
Theta_vacuum
Functions that can't be described by perturbation theory
field theory, 't Hooft–Polyakov monopoles, domain walls, flux tubes, and instantons are examples. A concrete, physical example is given by the Schwinger effect
Non-perturbative
Mathematical symbol used in algebras
in order to compute the properties of a dilute gas of instantons, specifically BPST instantons. It is a collection of numbers which allows one to express
't_Hooft_symbol
British mathematician (born 1963)
Torelli-type theorem for gravitational instantons." He and Hiraku Nakajima gave a construction of instantons on ALE spaces generalizing the
Peter_B._Kronheimer
South African theoretical physicist
With Stephen Hawking, he later developed the so-called Hawking-Turok instanton solutions which, according to the no-boundary proposal of Hawking and
Neil_Turok
British-Lebanese mathematician (1929–2019)
his more recent work was inspired by theoretical physics, in particular instantons and monopoles, which are responsible for some corrections in quantum field
Michael_Atiyah
Spacetime classification scheme in general relativity
in the analysis of gravitational instantons. Gibbons, G. W.; Hawking, S. W., Classification of gravitational instanton symmetries. Comm. Math. Phys. 66
Nuts and bolts (general relativity)
Nuts_and_bolts_(general_relativity)
Italian physicist
correspondence, showing quantitative agreement between instantons in N=4 supersymmetric field theory and D-instantons in type IIB supergravity on AdS5×S5. The derivation
Giancarlo_Rossi
Principle in theoretical physics
algebra Kac–Moody algebra Wess–Zumino–Witten model Gauge theory Anomalies Instantons Chern–Simons form Bogomol'nyi–Prasad–Sommerfield bound Exceptional Lie
Holographic_principle
American theoretical physicist and computer scientist
gravitational instanton. This Einstein metric is asymptotically locally Euclidean and self-dual, closely parallel to the Yang-Mills instanton. He is also
Andrew_J._Hanson
American physicist
University. He has conducted research in gauge theory, string theory, instantons, black holes, strong interactions, and many other topics. He was awarded
Curtis_Callan
Riemannian manifold which satisfies vacuum Einstein equations
Einstein manifolds in four Euclidean dimensions are studied as gravitational instantons. If M {\displaystyle M} is the underlying n {\displaystyle n} -dimensional
Einstein_manifold
Divergence in perturbative quantum field theory
singularity arising in this complex Borel plane, and is a counterpart of an instanton singularity. Associated with such singularities, renormalon contributions
Renormalon
Application of K-theory in string theory
forementioned cycle and then disappears. MMS refer to this process as an instanton, although really it need not be instantonic. The conserved charges are
K-theory_(physics)
Set of mathematical concepts in quantum gravity
includes quantum corrections to the metric tensor, such as the worldsheet instantons. For example, the quantum volume of a cycle is computed from the mass
Quantum_geometry
Dutch-American computer scientist
human wellbeing. Braam, P. J.; Donaldson, S. K. (1995). "Floer's work on instanton homology, knots and surgery". The Floer Memorial Volume. Birkhäuser Basel
Peter_Braam
Soviet and American mathematician (born 1934)
Comm. Math. Phys. 135 (1990), no. 1, 91–100. ADHM construction BPST instanton Instanton Chern–Simons theory Schwarz-type TQFTs Švarc–Milnor lemma Supermanifold
Albert_Schwarz
Breakdown of general covariance at the quantum level
trace is non-zero. Mixed anomaly Green–Schwarz mechanism Gravitational instanton Luis Álvarez-Gaumé; Edward Witten (1984). "Gravitational Anomalies". Nucl
Gravitational_anomaly
British theoretical physicist
December 2019. Hanany, Amihay; Tong, David; Tong (17 June 2003). "Vortices, Instantons and Branes". Journal of High Energy Physics. 0307 (7): 037. arXiv:hep-th/0306150
David_Tong_(physicist)
showed that they correspond to k = 2 instantons on S4. Hartshorne, Robin (1978), "Stable vector bundles and instantons", Communications in Mathematical Physics
Hartshorne_ellipse
Academic journal
algebras and integrability; non-commutative geometry; spectral theory; and instanton, monopoles and gauge theory. The journal is abstracted and indexed by:
Journal of Nonlinear Mathematical Physics
Journal_of_Nonlinear_Mathematical_Physics
Theories in particle physics and cosmology
algebra Kac–Moody algebra Wess–Zumino–Witten model Gauge theory Anomalies Instantons Chern–Simons form Bogomol'nyi–Prasad–Sommerfield bound Exceptional Lie
Brane_cosmology
Theoretical model of the vacuum
it is filled. This happens when we have a chiral anomaly and a gauge instanton. The development of quantum field theory (QFT) in the 1930s made it possible
Dirac_sea
Collection of possible string theory vacua
algebra Kac–Moody algebra Wess–Zumino–Witten model Gauge theory Anomalies Instantons Chern–Simons form Bogomol'nyi–Prasad–Sommerfield bound Exceptional Lie
String_theory_landscape
Moduli space of the Yang–Mills equations
gauge theory, the Yang–Mills moduli space (short YM moduli space, also instanton moduli space) is the moduli space of the Yang–Mills equations, hence the
Yang–Mills_moduli_space
Special type of principal bundle
− 2 {\displaystyle -2} . Principal SU(2)-bundle Freed, Daniel (1991). Instantons and 4-Manifolds. Cambridge University Press. ISBN 978-1-4613-9705-2. Hatcher
Principal_U(1)-bundle
Topologically stable solution of a partial differential equation
mapping S 3 → S U ( 2 ) {\displaystyle S^{3}\to SU(2)} . In the 1980's, the instanton and related solutions of the Wess–Zumino–Witten models, rose to considerable
Topological_defect
Hypothetical faster-than-light particle
algebra Kac–Moody algebra Wess–Zumino–Witten model Gauge theory Anomalies Instantons Chern–Simons form Bogomol'nyi–Prasad–Sommerfield bound Exceptional Lie
Tachyon
Monster and modular connection
suggesting a connection with generalized moonshine and gravitational instanton sums. At present, all of these ideas are still rather speculative, in
Monstrous_moonshine
are special examples of Yang–Mills connections, and are often called instantons. The Kobayashi–Hitchin correspondence proved by Donaldson, Uhlenbeck and
Hermitian Yang–Mills connection
Hermitian_Yang–Mills_connection
British physicist
conditions in string theory which have led to the postulation of D-branes and instantons. Green has been awarded the Paul Dirac and Maxwell Medals of the Institute
Michael_Green_(physicist)
Israeli American theoretical physicist
arise in string theory, and Dine, Seiberg, X. G. Wen, and Witten studied instantons on the string worldsheet. Gregory Moore and Seiberg studied Rational Conformal
Nathan_Seiberg
Physics concept expressed as E = mc²
protons and neutrons to antielectrons and neutrinos. This is the weak SU(2) instanton proposed by the physicists Alexander Belavin, Alexander Markovich Polyakov
Mass–energy_equivalence
Type of Riemannian manifold
asymptotic behaviors, are studied in physics under the name gravitational instantons. The Gibbons–Hawking ansatz gives examples invariant under a circle action
Hyperkähler_manifold
Topics referred to by the same term
north and south pole Dyon, a particle with electric and magnetic charge Instanton, a class of field solutions that includes monopoles Monomial, a polynomial
Monopole
American theoretical chemist
theory of electronically non-adiabatic processes and a semiclassical "instanton" theory of deep quantum tunnelling. For more complex molecular systems
William_Hughes_Miller
the concepts of Polyakov action, 't Hooft–Polyakov monopole and BPST instanton Isaak Pomeranchuk, predicted synchrotron radiation Bruno Pontecorvo, a
List_of_Russian_scientists
Japanese mathematician
Math. 97 (1989), no. 2, 313–349. doi:10.1007/BF01389045 Hiraku Nakajima. Instantons on ALE spaces, quiver varieties, and Kac-Moody algebras. Duke Math. J
Hiraku_Nakajima
Theory of stochastic partial differential equations
broken in a specific manner and dynamics is dominated by noise-induced instantons. In the deterministic limit, this phase collapses onto the critical boundary
Supersymmetric theory of stochastic dynamics
Supersymmetric_theory_of_stochastic_dynamics
Physical theory with fields invariant under the action of local "gauge" Lie groups
class of mappings from that manifold to the Lie group is nontrivial. See instanton for an example. The Yang–Mills action is now given by 1 4 g 2 ∫ Tr [
Gauge_theory
Phase transitions in the Hall effect
transitions can then be understood by looking at the topological excitations (instantons) that occur between those phases. Just after the first measurements on
Quantum_Hall_transitions
this could be used to classify instantons on a 4-sphere. Twistor correspondence Dunajski, Maciej (2010). Solitons, instantons, and twistors. Oxford: Oxford
Penrose_transform
Process in particle physics
algebra Kac–Moody algebra Wess–Zumino–Witten model Gauge theory Anomalies Instantons Chern–Simons form Bogomol'nyi–Prasad–Sommerfield bound Exceptional Lie
Tachyon_condensation
Mathematician
contributions to mathematical physics, including the ADHM construction of instantons, algebraic formalism of the quantum inverse scattering method, and the
Vladimir_Drinfeld
Chinese-American physicist (1926–2024)
the long-standing quantum degenerate double-wall potential and other instanton problems. They also did work on the neutrino mapping matrix. Lee was one
Tsung-Dao_Lee
American mathematician
1029-8479 [hep-th/99030409] [abs] S Paban, S Sethi and M Stern, Summing up instantons in three-dimensional Yang-Mills theories, Advances in Theoretical and
Mark_Stern
Russian mathematical and theoretical physicist
which he introduced in his 2002 paper, relates in an intricate way the instantons in gauge theory, integrable systems, and representation theory of infinite-dimensional
Nikita_Nekrasov
Isosinglet meson made of quarks and antiquarks
naturally explain. This "η–η′ puzzle" can be resolved by the 't Hooft instanton mechanism (proposed by Gerard 't Hooft in 1976), whose 1/ N realization
Eta_and_eta_prime_mesons
Gradient flow of the Yang–Mills action functional
This helps to find critical points, called Yang–Mills connections or instantons, which solve the Yang–Mills equations, as well as to study their stability
Yang–Mills_flow
Duality between theories of gravity on anti-de Sitter space and conformal field theories
algebra Kac–Moody algebra Wess–Zumino–Witten model Gauge theory Anomalies Instantons Chern–Simons form Bogomol'nyi–Prasad–Sommerfield bound Exceptional Lie
AdS/CFT_correspondence
correspondence (also known as Penrose–Ward correspondence) is a bijection between instantons on complexified Minkowski space and holomorphic vector bundles on twistor
Twistor_correspondence
Hypothetical vacuum, less stable than true vacuum
forms through a process known as bubble nucleation. In this process, instanton effects cause a bubble containing the true vacuum to appear. The walls
False_vacuum
Integral equation
Lax pair Dunajski 2009, pp. 30–31. Dunajski, Maciej (2009). Solitons, Instantons, and Twistors. Oxford; New York: OUP Oxford. ISBN 978-0-19-857063-9. OCLC 320199531
Marchenko_equation
Hypothetical particle with one magnetic pole
law for magnetism Ginzburg–Landau theory Halbach array Horizon problem Instanton Magnetic monopole problem Meron Soliton 't Hooft–Polyakov monopole Wu–Yang
Magnetic_monopole
Topological soliton
Domain wall (string theory), a theoretical 2-dimensional singularity Instanton, can form kink or domain walls in Euclidean time. Besides these important
Domain_wall
Unobservable spacetime curves needed to describe Dirac monopoles
algebra Kac–Moody algebra Wess–Zumino–Witten model Gauge theory Anomalies Instantons Chern–Simons form Bogomol'nyi–Prasad–Sommerfield bound Exceptional Lie
Dirac_string
Supersymmetric generalization of quantum chromodynamics
When N=M+1, these corrections result from a single instanton. For larger values of N the instanton calculation suffers from infrared divergences, however
Super_QCD
Russian theoretical physicist
Gerard 't Hooft. Polyakov and coauthors discovered the so-called BPST instanton which, in turn, led to the discovery of the vacuum angle in QCD. His path
Alexander Polyakov (physicist)
Alexander_Polyakov_(physicist)
English mathematician (born 1957)
focused on four-manifolds admitting a differentiable structure, using instantons, a particular solution to the equations of Yang–Mills gauge theory which
Simon_Donaldson
American physicist (1937–2007)
influential reviews on partially conserved currents, gauge theories, instantons, and magnetic monopoles—subjects fundamental to theoretical physics."
Sidney_Coleman
American computer scientist
Statistical Mechanics, IBM Research Laboratories, San Jose, June (1980) Instanton Techniques for Queueing Models of Large Computer Systems: Getting a Piece
Neil_J._Gunther
Hypothetical elementary particle
created abundantly during the Big Bang. Because of a unique coupling to the instanton field of the primordial universe (the "misalignment mechanism"), an effective
Axion
Equivalence in 3D quantum field theory
theory is the duality between squarks and vortices. In this theory, the instantons are 't Hooft–Polyakov magnetic monopoles whose actions are proportional
3D_mirror_symmetry
Theory of subatomic structure
1088/1126-6708/1998/02/003. S2CID 7562354. Nekrasov, Nikita; Schwarz, Albert (1998). "Instantons on noncommutative R4 and (2,0) superconformal six dimensional theory"
String_theory
American Mathematical Society ISBN 0-8218-3375-8 Dunajski, M. (2010) Solitons, Instantons and Twistors, Oxford University Press ISBN 978-0-19-857063-9
Integrability conditions for differential systems
Integrability_conditions_for_differential_systems
American theoretical physicist (1941–2025)
mesons, and topological effects in Yang-Mills gauge theories, such as the instanton physics in QCD. With Bruno Zumino, Bardeen formulated the theory of the
William_A._Bardeen
Russian mathematician (1937–2023)
Drinfeld, Vladimir; Hitchin, Nigel; Manin, Yuri (1978). "Construction of instantons". Physics Letters A. 65 (3): 185–187. Bibcode:1978PhLA...65..185A. doi:10
Yuri_Manin
Riemannian manifold with SU(n) holonomy
algebra Kac–Moody algebra Wess–Zumino–Witten model Gauge theory Anomalies Instantons Chern–Simons form Bogomol'nyi–Prasad–Sommerfield bound Exceptional Lie
Calabi–Yau_manifold
Framework of superstring theory
1016/0550-3213(78)90218-3. Nekrasov, Nikita; Schwarz, Albert (1998). "Instantons on noncommutative R4 and (2,0) superconformal six dimensional theory"
M-theory
Breakdown of parity at the quantum level
that the exterior derivative of the Chern–Simons action is equal to the instanton number, the 4-dimensional theory on M × S 1 {\displaystyle M\times S^{1}}
Parity_anomaly
Theoretical framework in physics
Alexander Polyakov, flux tubes by Holger Bech Nielsen and Poul Olesen, and instantons by Polyakov and coauthors. These objects are inaccessible through perturbation
Quantum_field_theory
Subfield of mathematical topology
coNP, provided that the Generalized Riemann hypothesis holds. He uses instanton gauge theory, the geometrization theorem of 3-manifolds, and subsequent
Computational_topology
Type of Yang–Mills theory magnetic monopole
pointlike and has a potential which behaves like 1/r everywhere. Meron Dyon Instanton Wu–Yang dictionary Wu, T.T. and Yang, C.N. (1968) in Properties of Matter
Wu–Yang_monopole
Russian-American physicist (b. 1945)
developed a description of intermittency in nonlinear systems by means of instanton solutions of the stochastic differential equations. Migdal returned to
Alexander_Migdal
squares for physicists. In Twisted K-theory and cohomology. In D-Brane Instantons and K-Theory Charges by Juan Maldacena, Gregory Moore and Nathan Seiberg
Twisted_K-theory
INSTANTON
INSTANTON
INSTANTON
INSTANTON
Boy/Male
Muslim/Islamic
Beloved of Allah
Girl/Female
Muslim
Sweet, Pleasant
Boy/Male
Arthurian Legend
The Green Knight.
Girl/Female
American, Australian, French, German, Hebrew, Latin, Spanish, Swedish
Life; Spanish Form of Eve; To Live; Living One; Animal
Boy/Male
English Scottish
French town.
Girl/Female
Greek
Beautiful voice.
Girl/Female
Hindu, Indian
Tree
Male
Icelandic
Icelandic form of Old Norse Ãsgautr, ÃSGAUTUR means "divine Gaut."
Surname or Lastname
English and Irish
English and Irish : variant spelling of Mayberry.
Boy/Male
Arabic, Muslim
Light of the Most Gracious i.e. Allah
INSTANTON
INSTANTON
INSTANTON
INSTANTON
INSTANTON