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Concept in theoretical physics
In theoretical physics orientifold is a generalization of the notion of orbifold, proposed by Augusto Sagnotti in 1987. The novelty is that in the case
Orientifold
Theory of subatomic structure
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
String_theory
Aspect of theoretical physics
Augusto Sagnotti in 1988, the type I string theory can be obtained as an orientifold of type IIB string theory, with 32 half-D9-branes added in the vacuum
Type_I_string_theory
Riemannian manifold with SU(n) holonomy
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Calabi–Yau_manifold
Italian theoretical physicist
propose, in 1987, that the type I string theory can be obtained as an orientifold of type IIB string theory, with 32 half-D9-branes added in the vacuum
Augusto_Sagnotti
Compact astronomical body
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Black_hole
Theories in particle physics and cosmology
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Brane_cosmology
American physicist
non-perturbative (exact) planar equivalence between super-Yang–Mills and orientifold non-supersymmetric theories (2003); (viii) non-Abelian flux tubes and
Mikhail_Shifman
Principle in theoretical physics
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Holographic_principle
important contributions to string theory (most notably the discovery of the orientifold, which connects type I string theory to type IIB string theory). Giovanni
List of quantum gravity researchers
List_of_quantum_gravity_researchers
Aspect of theoretical physics
theory with the coupling 1/g. This equivalence is known as S-duality. Orientifold of type IIB string theory leads to type I string theory. The mathematical
Type_II_string_theory
Extended objects found in string theory
Dirichlet-brane (D-brane) for the resulting object (this paper also coins orientifold for another object that arises under string T-duality). A 1989 paper
D-brane
Geometric space whose points represent algebro-geometric objects of some fixed kind
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Moduli_space
Technique in theoretical physics
Stieberger, "Four-dimensional string compactifications with D-branes, orientifolds and fluxes", Physics Reports 445, 1–193 (2007). arXiv:hep-th/0610327
Compactification_(physics)
Framework of superstring theory
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
M-theory
Hypothetical elementary particle that mediates gravity
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Graviton
Extended physical object in string theory
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Brane
Hypothetical faster-than-light particle
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Tachyon
Unified field theory
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Kaluza–Klein_theory
Lie algebra, usually infinite-dimensional
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Kac–Moody_algebra
Theory of strings with supersymmetry
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Superstring_theory
Manifold with Riemannian, complex and symplectic structure
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Kähler_manifold
248-dimensional exceptional simple Lie group
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
E8_(mathematics)
Hypothetical particle decay process of a proton
dimensions (5D) models; and in string theory variants using D6-branes and orientifolds. As a final consideration, while Supersymmetry addresses many interesting
Proton_decay
Type of smooth complex surface of kodaira dimension 0
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
K3_surface
Branch of string theory
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
F-theory
Type of geometry in mathematics
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Ricci-flat_manifold
Formalism in string theory
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
String_field_theory
Type of 2D conformal field theory
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Wess–Zumino–Witten_model
Collection of possible string theory vacua
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
String_theory_landscape
In physics and geometry: conjectured relation between pairs of Calabi–Yau manifolds
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Mirror symmetry (string theory)
Mirror_symmetry_(string_theory)
Simple Lie group; the automorphism group of the octonions
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
G2_(mathematics)
Peruvian theoretical physicist (b. 1954)
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Barton_Zwiebach
Duality between theories of gravity on anti-de Sitter space and conformal field theories
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
AdS/CFT_correspondence
Candidate "Theory of Everything"
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Introduction_to_M-theory
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
S-brane
Equivalence of two physical theories
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
S-duality
Diagrams describing the matter content
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Quiver_diagram
Set of equations that describe superstring theory in a non-perturbative framework
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Matrix_string_theory
52-dimensional exceptional simple Lie group
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
F4_(mathematics)
Symmetry between bosons and fermions
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Supersymmetry
26-dimensional string theory
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Bosonic_string_theory
Solitons in Euclidean spacetime
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Instanton
Process in particle physics
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Tachyon_condensation
Physics concept of subatomic structure
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Heterotic_string_theory
Type of Riemannian manifold
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Hyperkähler_manifold
Quantum mechanical model based on mathematical matrices
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Matrix_theory_(physics)
Seven-dimensional Riemannian manifold
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
G2_manifold
78-dimensional exceptional simple Lie group
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
E6_(mathematics)
Strong-weak duality in supersymmetric theories of theoretical physics
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Montonen–Olive_duality
Application of K-theory in string theory
Hanany & Kol (2000) used it to argue that there are eight species of orientifold one-plane. Uranga (2001) applied the K-theory classification to derive
K-theory_(physics)
Eight-dimensional Riemannian manifold
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Spin(7)-manifold
Asymmetry of classical and quantum action
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Anomaly_(physics)
Ten-dimensional supergravity
{\mathcal {N}}=2} theory in four dimensions, while reduction on a Calabi–Yau orientifold further breaks the symmetry down to give the phenomenologically viable
Type_IIA_supergravity
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
History_of_string_theory
Generalization of a manifold
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Conifold
manifold Spin(7) manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten domain wall K-theory (physics) Twisted K-theory
List_of_string_theory_topics
Generalized manifold
Geometric quotient Kawasaki's Riemann–Roch formula Orbifold notation Orientifold Ring of modular forms Stack (mathematics) Satake 1956. Thurston 1978–1981
Orbifold
fluxes; and the presence of additional objects such as D-branes and orientifold planes. The full physics of string theory can always be thought of as
String_background
Breakdown of conformal symmetry at the quantum level
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Conformal_anomaly
Type of Lie algebra of interest in physics
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Loop_algebra
Hypothetical model through which W and Z bosons acquire mass
1016/0370-2693(89)91265-3. Sannino, Francesco & Tuominen, Kimmo (2005). "Orientifold theory dynamics and symmetry breaking". Physical Review D. 71 (5) 051901
Technicolor_(physics)
Unobservable spacetime curves needed to describe Dirac monopoles
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Dirac_string
Superstring quantization approach
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
GS_formalism
Invariant action in bosonic string theory
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Nambu–Goto_action
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Twisted_K-theory
Hypothetical particle
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Dilaton
Base space for supersymmetric theories
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Superspace
Class of symmetries in string theory
type IIB superstring theories with certain boundary conditions (termed orientifold). Formally, the location of the string on the circle is described by
String_duality
Two-form field
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Kalb–Ramond_field
Secondary characteristic classes of 3-manifolds
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Chern–Simons_form
Hypothetical physical entity
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
String_(physics)
Generalization of electrodynamics
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
P-form_electrodynamics
Hypothetical particle dual to the photon
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Dual_photon
Class of quantum field theory models
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Non-linear_sigma_model
Concept in mathematical physics
the compactifications of the 10-dimensional string with a subsequent orientifold projection κ {\displaystyle \kappa } using an involution ν {\displaystyle
Hitchin_functional
2D conformal field theory used in string theory
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Polyakov_action
Lower energy limit in string theory
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Bogomol'nyi–Prasad–Sommerfield bound
Bogomol'nyi–Prasad–Sommerfield_bound
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
List of quantum field theories
List_of_quantum_field_theories
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Ramond–Ramond_field
Algebra used in 2D conformal field theories and string theory
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Vertex_operator_algebra
Generalization of a black hole to higher dimensions
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Black_brane
Theoretical process
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Hanany–Witten_transition
Theory of supergravity in four dimensions
But if the type II theories are instead compactified on a Calabi–Yau orientifold, which breaks even more of the supersymmetry, the result is also an N
4D_N_=_1_supergravity
Property of a differential manifold that includes complex structures
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Generalized_complex_structure
Indian theoretical physicist
ISBN 978-3-642-25946-3. S2CID 53391911. Atish Dabholkar (1998). "Lectures on Orientifolds and Duality". High Energy Physics and Cosmology, ICTP Proceedings. 14:
Atish_Dabholkar
133-dimensional exceptional simple Lie group
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
E7_(mathematics)
Brane in eleven-dimensional supergravity
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
M2-brane
optical materials Organic photorefractive materials Organic superconductor Orientifold Orifice plate Origin of avian flight Ornstein–Zernike equation Orr–Sommerfeld
Index_of_physics_articles_(O)
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Hořava–Witten_theory
Mathematical concept
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Worldsheet
Hypothetical particle found in supergravity
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Dual_graviton
Black brane solution in eleven-dimensional supergravity
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
M5-brane
Conjectured duality combining S-duality and T-duality
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
U-duality
American theoretical physicist
November 2001). "Chiral four-dimensional N=1 supersymmetric type IIA orientifolds from intersecting D6-branes". Nuclear Physics B. 615 (1–3): 3–32. arXiv:hep-th/0107166
Gary_Shiu
Algebraic structure used in theoretical physics
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Supergroup_(physics)
Modern theory of gravitation that combines supersymmetry and general relativity
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Supergravity
Algebra combining both supersymmetry and conformal symmetry
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Superconformal_algebra
Antimatter research project
M.; Haack, M.; Körs, B. (1 June 2004). "Brane/flux interactions in orientifolds". Fortschritte der Physik. 52 (67): 583–589. arXiv:hep-th/0312172. Bibcode:2004ForPh
ATHENA_experiment
Algebraic structure used in theoretical physics
manifold Spin(7)-manifold Generalized complex manifold Orbifold Conifold Orientifold Moduli space Hořava–Witten theory K-theory (physics) Twisted K-theory
Lie_superalgebra
ORIENTIFOLD
ORIENTIFOLD
ORIENTIFOLD
ORIENTIFOLD
Boy/Male
English
Born at Christmas.
Boy/Male
Hindu
Boy/Male
Tamil
Blind
Boy/Male
Muslim
Good news
Boy/Male
Indian
Pungent, Acrid
Girl/Female
Muslim
Witty, Smart, Wise
Boy/Male
Tamil
Morning, Dawn
Girl/Female
Tamil
Lokamatri | லோகாமாதà¯à®°à¯€
Lakshmi, Mother of the world
Girl/Female
Tamil
Pretty, Beautiful
Girl/Female
Australian, Finnish
Alive; Animated; Lively
ORIENTIFOLD
ORIENTIFOLD
ORIENTIFOLD
ORIENTIFOLD
ORIENTIFOLD