93 citations · 667 across the 57 of their papers we have counts for
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Phase transition on superfluid vortices in Higgs-Confinement crossover
Tomoya Hayata, Yoshimasa Hidaka, Dan Kondo
We propose a novel method to distinguish states of matter by identifying spontaneous symmetry breaking on extended objects, such as vortices, even in the absence of a bulk phase tr…
Second order chiral kinetic theory under gravity and antiparallel charge-energy flow
Tomoya Hayata, Yoshimasa Hidaka, Kazuya Mameda
We derive the chiral kinetic theory under the presence of a gravitational Riemann curvature. It is well-known that in the chiral kinetic theory there inevitably appears a redundant…
Diffusive Nambu-Goldstone modes in quantum time-crystals
Tomoya Hayata, Yoshimasa Hidaka
We study the Nambu-Goldstone (NG) modes associated with spontaneous breaking of the continuous time-translation symmetry. To discuss a quantum time-crystal with the spontaneously-b…
Lefschetz-thimble analysis of the sign problem in one-site fermion model
Yuya Tanizaki, Yoshimasa Hidaka, Tomoya Hayata
The Lefschetz-thimble approach to path integrals is applied to a one-site model of electrons, i.e., the one-site Hubbard model. Since the one-site Hubbard model shows a non-analyti…
Dispersion relations of Nambu-Goldstone modes at finite temperature and density
Tomoya Hayata, Yoshimasa Hidaka
We discuss the dispersion relations of Nambu-Goldstone (NG) modes associated with spontaneous breaking of internal symmetries at finite temperature and/or density. We show that the…
Schwinger Mechanism with Stochastic Quantization
Kenji Fukushima, Tomoya Hayata
We prescribe a formulation of the particle production with real-time Stochastic Quantization. To construct the retarded and the time-ordered propagators we decompose the stochastic…
Broken spacetime symmetries and elastic variables
Tomoya Hayata, Yoshimasa Hidaka
We discuss spontaneous breaking of continuum symmetries, whose generators do explicitly depend on the spacetime coordinates. We clarify the relation between broken symmetries and e…