SCOAP3 Repository 6 records found  Search took 0.01 seconds. 
1. Classification of sign-problem-free relativistic fermions on the basis of the Majorana positivity / Hayata, Tomoya ; Yamamoto, Arata
We classify the sign-problem-free relativistic fermion actions on the basis of the Majorana representation. [...]
Published in PTEP 2017 (2017) 043B08 10.1093/ptep/ptx040 arXiv:1701.07182
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2. Complex saddle points and the sign problem in complex Langevin simulation / Hayata, Tomoya ; Hidaka, Yoshimasa ; Tanizaki, Yuya
We show that complex Langevin simulation converges to a wrong result within the semiclassical analysis, by relating it to the Lefschetz-thimble path integral, when the path-integral weight has different phases among dominant complex saddle points. [...]
Published in Nuclear Physics B (2016) 10.1016/j.nuclphysb.2016.07.031
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3. Lefschetz-thimble analysis of the sign problem in one-site fermion model / Tanizaki, Yuya ; Hidaka, Yoshimasa ; Hayata, Tomoya
The Lefschetz-thimble approach to path integrals is applied to a one-site model of electrons, i.e., the one-site Hubbard model. [...]
Published in New J. Phys. 18 (2016) 033002 10.1088/1367-2630/18/3/033002 arXiv:1509.07146
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4. Inhomogeneous Polyakov loop induced by inhomogeneous chiral condensates / Hayata, Tomoya ; Yamamoto, Arata
We study the spatial inhomogeneity of the Polyakov loop induced by inhomogeneous chiral condensates. [...]
Published in Physics letters B 744 (2015) 401-405 10.1016/j.physletb.2015.04.025
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5. Broken spacetime symmetries and elastic variables / Hayata, Tomoya ; Hidaka, Yoshimasa
We discuss spontaneous breaking of continuum symmetries, whose generators do explicitly depend on the spacetime coordinates. [...]
Published in Physics letters B 735 (2014) 195-199 10.1016/j.physletb.2014.06.039
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6. Schwinger mechanism with stochastic quantization / Fukushima, Kenji ; Hayata, Tomoya
We prescribe a formulation of the particle production with real-time Stochastic Quantization. [...]
Published in Physics letters B 735 (2014) 371-375 10.1016/j.physletb.2014.06.060
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