233 citations · 4.2k across the 143 of their papers we have counts for
146 papers
A new picture of quantum tunneling in the real-time path integral from Lefschetz thimble calculations
Jun Nishimura, Katsuta Sakai, Atis Yosprakob
It is well known that quantum tunneling can be described by instantons in the imaginary-time path integral formalism. However, its description in the real-time path integral formal…
Quantum tunneling in the real-time path integral by the Lefschetz thimble method
Jun Nishimura
Quantum tunneling is mostly discussed in the Euclidean path integral formalism using instantons. On the other hand, it is difficult to understand quantum tunneling based on the rea…
The emergence of expanding space-time in the Lorentzian type IIB matrix model with a novel regularization
Mitsuaki Hirasawa, Konstantinos N. Anagnostopoulos, Takehiro Azuma +4
The Lorentzian type IIB matrix model is a promising candidate for a non-perturbative formulation of superstring theory. However, it was recently found that a Euclidean space-time a…
The dynamics of zero modes in lattice gauge theory -- difference between SU(2) and SU(3) in 4D
Yuhma Asano, Jun Nishimura
The dynamics of zero modes in gauge theory is highly nontrivial due to its nonperturbative nature even in the case where the other modes can be treated perturbatively. One of the r…
Color superconductivity on the lattice -- analytic predictions from QCD in a small box
Takeru Yokota, Yuta Ito, Hideo Matsufuru +4
We investigate color superconductivity on the lattice using the gap equation for the Cooper pair condensate. The weak coupling analysis is justified by choosing the physical size o…
Numerical studies on the finite-temperature CP restoration in 4D SU(N) gauge theory at
Akira Matsumoto, Kohta Hatakeyama, Mitsuaki Hirasawa +3
Recent studies on the 't Hooft anomaly matching condition have suggested a nontrivial phase structure in 4D SU() gauge theory at . In the large- limit, it has been found…