Topic
Symmetry (physics)
About: Symmetry (physics) is a research topic. Over the lifetime, 26435 publications have been published within this topic receiving 500189 citations. The topic is also known as: symmetry (physics) & physical symmetry.
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TL;DR: In this article, the (infinite-dimensional) supersymmetry algebra in 1 + 1 space-time dimension is extended in order to incorporate, in a non-trivial way, an internal symmetry.
357 citations
TL;DR: To study the nonmagnetic dielectric state and Mott transitions, an example of a two-dimensional modified Hubbard model with a large number of colors is considered and low-energy excitations in this phase are fermionic excitations and Bose excitations described by gauge fields of the U(1) group.
Abstract: To study the nonmagnetic dielectric state and Mott transitions we consider an example of a two-dimensional modified Hubbard model with a large number of colors Low-energy excitations in this phase are fermionic excitations and Bose excitations described by gauge fields of the U(1) group The transition into the metal state has little effect on the fermionic spectrum, but it results in the local U(1) symmetry being broken and fermions becoming able to transfer charge excitations Apart from the half-filling, scalar Bose excitations also appear Due to the presence of additional gauge fields the physical conductivity is determined by the lowest conductivity of the Fermi or Bose subsystems
353 citations
TL;DR: In this article, the authors presented the most general rotating black hole solution of five-dimensional N = 4 super-string vacua that conforms to the no-hair theorem.
353 citations
TL;DR: The symmetry algebra of asymptotically flat spacetimes at null infinity in three dimensions is the semi-direct sum of the infinitesimal diffeomorphisms on the circle with an Abelian ideal of supertranslations as mentioned in this paper.
Abstract: The symmetry algebra of asymptotically flat spacetimes at null infinity in three dimensions is the semi-direct sum of the infinitesimal diffeomorphisms on the circle with an Abelian ideal of supertranslations. The associated charge algebra is shown to admit a non-trivial classical central extension of Virasoro type closely related to that of the anti-de Sitter case.
349 citations
TL;DR: In this article, the sensitivity of present-energy weak interactions to a strongly interacting heavy-Higgs-boson sector is discussed, and the effects are found to be small, of the order of the square of the gauge coupling times logarithms (but not powers) of the Higgs boson mass divided by the W mass.
Abstract: The sensitivity of present-energy weak interactions to a strongly interacting heavy-Higgs-boson sector is discussed. The gauged nonlinear sigma model, which is the limit of the linear model as the Higgs-boson mass goes to infinity, is used to organize and catalogue all possible heavy-Higgs-boson effects. As long as the SU(2)/sub L/ x SU(2)/sub R/ symmetry of the Higgs sector is preserved, these effects are found to be small, of the order of the square of the gauge coupling times logarithms (but not powers) of the Higgs-boson mass divided by the W mass. We work in the context of a simplified model with gauge group SU(2)/sub L/; the extension to SU(2)/sub L/ x U(1) is briefly discussed.
346 citations