Goldstone
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Power-law out of time order correlation functions in the SYK model Open
We evaluate the finite temperature partition sum and correlation functions of the Sachdev–Ye–Kitaev (SYK) model. Starting from a recently proposed mapping of the SYK model onto Liouville quantum mechanics, we obtain our results by exact in…
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Monitoring and manipulating Higgs and Goldstone modes in a supersolid quantum gas Open
Breaking the symmetry in a supersolid The concept of broken symmetry has relevance across all branches of physics, including particle and condensed matter physics. In many cases, the shape of the potential energy resembles a Mexican hat, a…
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The Potential of DAS in Teleseismic Studies: Insights From the Goldstone Experiment Open
Distributed acoustic sensing (DAS) is a recently developed technique that has demonstrated its utility in the oil and gas industry. Here we demonstrate the potential of DAS in teleseismic studies using the Goldstone OpticaL Fiber Seismic e…
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Counting Rules of Nambu–Goldstone Modes Open
When global continuous symmetries are spontaneously broken, there appear gapless collective excitations called Nambu–Goldstone modes (NGMs) that govern the low-energy property of the system. The application of this famous theorem ranges fr…
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A Goldstone theorem for continuous non-invertible symmetries Open
A bstract We study systems with an Adler-Bell-Jackiw anomaly in terms of non-invertible symmetry. We present a new kind of non-invertible charge defect where a key role is played by a local current operator localized on the defect. The cha…
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Emergent Structural Mechanisms for High-Density Collective Motion Inspired by Human Crowds Open
Collective motion of large human crowds often depends on their density. In extreme cases like heavy metal concerts and black Friday sales events, motion is dominated by physical interactions instead of conventional social norms. Here, we s…
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Chiral phase transition in three-flavor QCD from lattice QCD Open
We analyze the pseudocritical behavior of three-flavor QCD using highly improved staggered quarks on lattices with temporal extent NÏ�=8 and for quark masses corresponding to a pseudoscalar Goldstone mass in the range 80 MeV mÏ� 140 MeV. O…
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Detecting Goldstone modes with entanglement entropy Open
In the face of mounting numerical evidence, Metlitski and Grover [arXiv:1112.5166] have given compelling analytical arguments that systems with spontaneous broken continuous symmetry contain a sub-leading contribution to the entanglement e…
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Double soft theorems and shift symmetry in nonlinear sigma models Open
We show both the leading and subleading double soft theorems of the nonlinear sigma model follow from a shift symmetry enforcing Adler's zero condition in the presence of an unbroken global symmetry. They do not depend on the underlying co…
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Exciting the Goldstone Modes of a Supersolid Spin-Orbit-Coupled Bose Gas Open
Supersolidity is deeply connected with the emergence of Goldstone modes, reflecting the spontaneous breaking of both phase and translational symmetry. Here, we propose accessible signatures of these modes in harmonically trapped spin-orbit…
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New Soft Theorems for Goldstone-Boson Amplitudes Open
In this Letter we discuss new soft theorems for the Goldstone-boson amplitudes with nonvanishing soft limits. The standard argument is that the nonlinearly realized shift symmetry leads to the vanishing of scattering amplitudes in the soft…
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Emergence of nematic paramagnet via quantum order-by-disorder and pseudo-Goldstone modes in Kitaev magnets Open
The appearance of nontrivial phases in Kitaev materials exposed to an\nexternal magnetic field has recently been a subject of intensive studies. Here,\nwe elucidate the relation between the field-induced ground states of the\nclassical and…
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Effect of discrete quark momenta on the Goldstone mode in a magnetic field Open
The meson static properties are investigated in Pauli-Villars regularized Nambu--Jona-Lasinio model in strong magnetic field. The quark dimension reduction leads to not only the magnetic catalysis effect on chiral symmetry restoration but …
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Pseudo-Hermitian approach to Goldstone’s theorem in non-Abelian non-Hermitian quantum field theories Open
We generalise previous studies on the extension of Goldstone's theorem from\nHermitian to non-Hermitian quantum field theories with Abelian symmetries to\ntheories possessing a glocal non-Abelian symmetry. We present a detailed\nanalysis f…
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Nambu-Goldstone effective theory of information at quantum criticality Open
We establish a fundamental connection between quantum criticality of a many-body system, such as Bose-Einstein condensates, and its capacity of information-storage and processing. For deriving the effective theory of modes in the vicinity …
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Spontaneously broken boosts and the Goldstone continuum Open
The spontaneous breaking of boost invariance is ubiquitous in nature, yet the associated Goldstone bosons are nowhere to be seen. We discuss why some subtleties are to be expected in the Goldstone phenomenon for spontaneously broken boosts…
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Counting Nambu-Goldstone Modes of Higher-Form Global Symmetries Open
We discuss the counting of Nambu-Goldstone (NG) modes associated with the spontaneous breaking of higher-form global symmetries. Effective field theories of NG modes are developed based on symmetry-breaking patterns, using a generalized co…
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Partially composite Goldstone Higgs boson Open
We consider a model of dynamical electroweak symmetry breaking with a partially composite Goldstone Higgs boson. The model is based on a strongly interacting fermionic sector coupled to a fundamental scalar sector via Yukawa interactions. …
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Keeping Your Mouth Shut: Spiraling Self-Censorship in the United States Open
Over the period from the heyday of McCarthyism to the present, the percentage of the American people not feeling free to express their views has tripled. In 2020, more than four in ten people engaged in self-censorship. Our analyses of ove…
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Theory of non-Abelian superfluid dynamics Open
We write down a theory for non-Abelian superfluids with a partially broken (semisimple) Lie group. We adapt the off-shell formalism of hydrodynamics to superfluids and use it to comment on the superfluid transport compatible with the secon…
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Effective Lagrangian for Nambu-Goldstone modes in nonequilibrium open systems Open
We develop the effective field theory of diffusive Nambu-Goldstone (NG) modes associated with spontaneous internal symmetry breaking taking place in nonequilibrium open systems. The effective Lagrangian describing semiclassical dynamics of…
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Models of Goldstone gauginos Open
Models with Dirac gauginos provide appealing scenarios for physics beyond the\nstandard model. They have smaller radiative corrections to the Higgs mass, a\nsuppression of certain SUSY production processes, and ameliorated flavor\nconstrai…
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Spontaneous symmetry breaking and Nambu–Goldstone modes in open classical and quantum systems Open
We discuss spontaneous symmetry breaking of open classical and quantum systems. When a continuous symmetry is spontaneously broken in an open system, a gapless excitation mode appears corresponding to the Nambu–Goldstone mode. Unlike isola…
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Theory and phenomenology of the elementary Goldstone Higgs boson Open
We show, via a careful analytical and numerical analysis, that a pseudo Goldstone nature of the Higgs is naturally embodied by an elementary realization that also serves as ultraviolet completion. Renormalizability married to perturbation …
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Higgs and Goldstone spin-wave modes in striped magnetic texture Open
Spontaneous symmetry breaking is ubiquitous in physics. Its spectroscopic\nsignature consists in the softening of a specific mode upon approaching the\ntransition from the high symmetry side and its subsequent splitting into a\nzero-freque…
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Massive Goldstone (Higgs) mode in two-dimensional ultracold atomic lattice systems Open
We discuss how to reveal the massive Goldstone mode, often referred to as the\nHiggs amplitude mode, near the Superfluid-to-Insulator quantum critical point\n(QCP) in a system of two-dimensional ultracold bosonic atoms in optical\nlattices…
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A Regularized Second-Order Correlation Method from Green’s Function Theory Open
[Image: see text] We present a scalable single-particle framework to treat electronic correlation in molecules and materials motivated by Green’s function theory. We derive a size-extensive Brillouin-Wigner perturbation theory from the sin…
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Extended Skyrme equation of state in asymmetric nuclear matter Open
\n We present a new equation of state for infinite systems (symmetric, asymmetric, and neutron matter) based on an extended Skyrme functional that has been constrained by microscopic Brueckner-Bethe-Goldstone results. The resulting equatio…
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Effective Field Theory with Nambu–Goldstone Modes Open
These lectures provide an introduction to the low-energy dynamics of Nambu–Goldstone fields, which associated with some spontaneous (or dynamical) symmetry breaking, using the powerful methods of effective field theory. The generic symmetr…
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Pure Goldstone mode in the quench dynamics of a confined ultracold Fermi gas in the BCS-BEC crossover regime Open
We present a numerical study of a confined ultracold Fermi gas showing that\nthe Goldstone mode of the BCS gap is directly visible in the dynamics of the\nsingle-particle excitations. To this end, we investigate the low-energy dynamic\nres…