Results 41 to 50 of about 174,677 (231)

BCS as Foundation and Inspiration: The Transmutation of Symmetry [PDF]

open access: yes, 2010
The BCS theory injected two powerful ideas into the collective consciousness of theoretical physics: pairing and spontaneous symmetry breaking. In the 50 years since the seminal work of Bardeen, Cooper, and Schrieffer, those ideas have found important ...
Wilczek, Frank
core   +2 more sources

Spontaneous symmetry breaking in light cone quantum field theory

open access: yesPhysics Letters B, 1991
Abstract We reexamine light cone quantisation of scalar field theories with a spontaneously broken internal symmetry. To this end we use the Dirac-Bergmann algorithm for quantisation of constrained systems. Carefully taking into account the zero modes with light cone momentum k + = 0, we obtain secondary constraints which determine the (tree level)
Th. Heinzl, St. Krusche, E. Werner
openaire   +1 more source

Wigner localization in quantum dots from Kohn-Sham density functional theory without symmetry breaking [PDF]

open access: yesPhysical Review B, 2014
We address low-density two-dimensional circular quantum dots with spin-restricted Kohn-Sham density functional theory. By using an exchange-correlation functional that encodes the effects of the strongly-correlated regime (and that becomes exact in the limit of infinite correlation), we are able to reproduce characteristic phenomena such as the ...
Mendl, C.B.   +2 more
openaire   +3 more sources

Spontaneous symmetry breaking in tensor theories

open access: yesJournal of High Energy Physics, 2019
In this work we study spontaneous symmetry breaking patterns in tensor models. We focus on the patterns which lead to effective matrix theories transforming in the adjoint of U(N).
P. Diaz, J. A. Rosabal
doaj   +1 more source

Electroweak Breaking in Supersymmetric Models

open access: yes, 1992
We discuss the mechanism for electroweak symmetry breaking in supersymmetric versions of the standard model. After briefly reviewing the possible sources of supersymmetry breaking, we show how the required pattern of symmetry breaking can automatically ...
Ibanez, L. E., Ross, G. G.
core   +1 more source

Symmetric Gapped Interfaces of SPT and SET States: Systematic Constructions

open access: yesPhysical Review X, 2018
Symmetry-protected topological (SPT) states have boundary ’t Hooft anomalies that obstruct the effective boundary theory realized in its own dimension with UV completion and with an on-site G-symmetry.
Juven Wang, Xiao-Gang Wen, Edward Witten
doaj   +1 more source

Broken Symmetry in Density-Functional Theory: Analysis and Cure [PDF]

open access: yes, 2003
We present a detailed analysis of the broken-symmetry mean-field solutions using a four-electron rectangular quantum dot as a model system. Comparisons of the density-functional theory predictions with the exact ones show that the symmetry breaking ...
A. Harju   +16 more
core   +2 more sources

Spontaneous symmetry breakings in Z2 gauge theories for doped quantum dimer and eight-vertex models [PDF]

open access: yesAnnals of Physics, 2005
Behavior of doped fermions in $Z_2$ gauge theories for the quantum dimer and eight-vertex models is studied. Fermions carry charge and spin degrees of freedom. In the confinement phase of the $Z_2$ gauge theories, these internal symmetries are spontaneously broken and a superconducting or Ne l state appears.
Ichinose, Ikuo, Yoshioka, Daisuke
openaire   +2 more sources

Algebraic Approach to Bose–Einstein Condensation in Relativistic Quantum Field Theory: Spontaneous Symmetry Breaking and the Goldstone Theorem [PDF]

open access: yesAnnales Henri Poincaré, 2020
AbstractWe construct states describing Bose–Einstein condensates at finite temperature for a relativistic massive complex scalar field with $$|\varphi |^4$$ | φ | 4 ...
Brunetti, Romeo   +2 more
openaire   +5 more sources

Modification entropy of Kerr–Sen-like black hole in Lorentz-breaking bumblebee gravity

open access: yesFrontiers in Physics
The Lorentz symmetry breaking theory not only affects the space–time background but also the dynamic behavior of bosons and fermions in curved space–time.
Xia Tan, Cong Wang, Shu-Zheng Yang
doaj   +1 more source

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