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Showing 1 to 10 of 10 for “"U(1) symmetry"”.
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Zero modes and degrees of freedom of topological solitons on the plane
… on parameters describing their global U(1) symmetry and translations in the plane. Thus it is not possible to continuously deform these coaxial multivortices into a system of multiple, separated vortices. In contrast, the multivortices of complex sine-Gordon-1 model are shown to have an …
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The BCS - BEC Crossover in Ultracold Fermion Gases
… the spontaneous breaking of global $U(1)$ gauge symmetry which underlies both quantum condensation phenomena. Recently much attention has been paid to this problem, since Feshbach resonances allow for an experimental implementation of crossover physics in cold fermion gases. The strong …
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Collective Phenomena in Excitonic Quantum Matter
… key common feature: a spontaneously broken U(1) symmetry and the resulting gapless Goldstone collective excitations, which generate unique distinguishing signatures. I first develop a theory for disordered excitonic insulators, which are classified by the symmetries of the introduced impurities. …
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Supersymmetric backgrounds of M-theory and AdS4/CFT3 correspondence
… the necessary and sufficient conditions for supersymmetry can be phrased in terms of a local SU(2)-structure on Y7. Solutions with non-zero M2-brane charge also admit a canonical contact structure, in terms of which many physical quantities can be expressed, including the free energy and the …
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Aspects of electroweak symmetry breaking in physics beyond the standard model
… that the minimal model for electroweak symmetry breaking, with a single Higgs boson, is not realised in nature and that new physics, in addition to (or instead of) the Higgs, will be discovered at the Large Hadron Collider (LHC). However constraints on new physics indicate that many …
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Towards Error-Resilience in Quantum Simulation of Lattice Gauge Theories
… and mitigate noise via several methods including symmetry verification, Floquet calibration, echo sequences, algorithmic qubit and coupler selection, and assignment averaging. In a parallel effort, we present a procedure to protect quantum simulations of lattice gauge theories against coherent …
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Search For Solar Axions
… proposed an elegant solution for restoring CP symmetry to the QCD Lagrangian \cite{PhysRevD.16.1791}. This method includes an additional global U(1) symmetry included in the QCD Lagrangian which is spontaneously broken at a high energy scale, f<sub>a</sub>. Breaking the symmetry generates a …
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EXPANSION AFTER INFLATION AND REHEATING WITH A CHARGED INFLATON
… generation of the observed matter-antimatter asymmetry and perhaps a primordial mechanism for the generation of cosmic magnetic fields. The transition from an inflationary to a radiation-dominated, thermal phase (reheating) is likely to be phenomenologically rich. Reheating could include …
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Searching for Heavy Photons With Detached Vertices in the Heavy Photon Search Experiment
<p>The Jefferson Lab Heavy Photon Search (HPS) experiment is searching for a hypothetical massive particle called the heavy photon which could mediate a dark electromagnetic-type force. If heavy photons kinetically mix with Standard Model photons, they may be radiated by electrons scattering from a …
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Strongly correlated quantum fluids and effective thermalization in non-Markovian driven-dissipative photonic systems
… by a spontaneous breaking of the U(1) symmetry and incommensurate density. The results of this Chapter are based on the following publications: - J. Lebreuilly, M. Wouters and I. Carusotto, ``Towards strongly correlated photons in arrays of dissipative nonlinear cavities under a …