Results 11 to 20 of about 2,617,483 (275)
Spontaneous Symmetry Breaking and Chiral Symmetry [PDF]
, 2000 In this introductory lecture, some basic features of the spontaneous symmetry breaking are discussed. More specifically, $\sigma $-model, non-linear realization, and some examples of spontaneous symmetry breaking in the non-relativistic system are ...
Li, Ling-Fong
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Spin-Group Symmetry in Magnetic Materials with Negligible Spin-Orbit Coupling [PDF]
Physical Review X, 2021 Symmetry formulated by group theory plays an essential role with respect to the laws of nature, from fundamental particles to condensed matter systems.
Pengfei Liu +4 more
semanticscholar +1 more source
Mirror Symmetry as a Gauge Symmetry [PDF]
, 1994 It is shown that in string theory mirror duality is a gauge symmetry (a Weyl transformation) in the moduli space of $N=2$ backgrounds on group manifolds, and we conjecture on the possible generalization to other backgrounds, such as Calabi-Yau manifolds ...
Amit Giveon +21 more
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Conformal symmetry and its breaking in two dimensional Nearly Anti-de-Sitter space [PDF]
, 2016 We study a two dimensional dilaton gravity system, recently examined by Almheiri and Polchinski, which describes near extremal black holes, or more generally, nearly $AdS_2$ spacetimes.
J. Maldacena, D. Stanford, Zhenbin Yang
semanticscholar +1 more source
Modular symmetry and non-Abelian discrete flavor symmetries in string compactification [PDF]
, 2018 We study the modular symmetry in magnetized D-brane models on $T^2$. Non-Abelian flavor symmetry $D_4$ in the model with magnetic flux $M=2$ (in a certain unit) is a subgroup of the modular symmetry.
Kobayashi, Tatsuo +4 more
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Fiber-Base Duality and Global Symmetry Enhancement [PDF]
, 2014 We show that the 5D Nekrasov partition functions enjoy the enhanced global symmetry of the UV fixed point. The fiber-base duality is responsible for the global symmetry enhancement.
Mitev, Vladimir +3 more
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Crystal time-reversal symmetry breaking and spontaneous Hall effect in collinear antiferromagnets [PDF]
Science Advances, 2019 Identification of a previously overlooked spontaneous Hall effect mechanism creates opportunities in low-dissipation spintronics. Electrons, commonly moving along the applied electric field, acquire in certain magnets a dissipationless transverse ...
L. vSmejkal +3 more
semanticscholar +1 more source
PT-symmetry broken by point-group symmetry [PDF]
, 2013 We discuss a PT-symmetric Hamiltonian with complex eigenvalues. It is based on the dimensionless Schr\"{o}dinger equation for a particle in a square box with the PT-symmetric potential $V(x,y)=iaxy$.
Cotton F. A. +4 more
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Symmetry, symmetry breaking, and pion parton distributions
, 2020 Pion valence, glue and sea distributions are calculated using a continuum approach to the two valence-body bound-state problem. Since the framework is symmetry preserving, physical features of the distributions are properly expressed.
Binosi, Daniele +5 more
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QCD Baryons in the 1/N_c Expansion [PDF]
, 2001 The 1/N_c expansion provides a theoretical method for analyzing the spin-flavor symmetry properties of baryons in QCD that is quantitative, systematic and predictive.
Jenkins, E.
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