Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Tatsuhiro Misumi"'
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 6, Pp 1-33 (2022)
Abstract The resurgence structure of the 2d O(N) sigma model at large N is studied with a focus on an IR momentum cutoff scale a that regularizes IR singularities in the semiclassical expansion. Transseries expressions for condensates and correlators
Externí odkaz:
https://doaj.org/article/5ed77306596f4fbbb9bbec79c5c488da
Autor:
Jun Yumoto, Tatsuhiro Misumi
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 2, Pp 1-25 (2022)
Abstract We study lattice fermions from the viewpoint of spectral graph theory (SGT). We find that a fermion defined on a certain lattice is identified as a spectral graph. SGT helps us investigate the number of zero eigenvalues of lattice Dirac oper
Externí odkaz:
https://doaj.org/article/47b35044c27d4562baddc34bbda519ed
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-41 (2021)
Abstract We investigate the exact-WKB analysis for quantum mechanics in a periodic potential, with N minima on S 1. We describe the Stokes graphs of a general potential problem as a network of Airy-type or degenerate Weber-type building blocks, and p
Externí odkaz:
https://doaj.org/article/293f11824b6d4024ad789c4fd223a3a5
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 3, Pp 1-51 (2021)
Abstract We study the vacuum pair production by a time-dependent strong electric field based on the exact WKB analysis. We identify the generic structure of a Stokes graph for systems with the vacuum pair production and show that the number of produc
Externí odkaz:
https://doaj.org/article/5f5901f408d8447193861b02914872f5
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 12, Pp 1-51 (2020)
Abstract There are two well-known approaches to studying nonperturbative aspects of quantum mechanical systems: saddle point analysis of the partition functions in Euclidean path integral formulation and the exact-WKB analysis based on the wave funct
Externí odkaz:
https://doaj.org/article/0e77761fef264d8f8ea67c4050be4b36
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 8, Pp 1-29 (2020)
Abstract We investigate the lattice ℂP N−1 sigma model on S s 1 $$ {S}_s^1 $$ (large) × S τ 1 $$ {S}_{\tau}^1 $$ (small) with the ℤ N symmetric twisted boundary condition, where a sufficiently large ratio of the circumferences (L s ≫ L τ )
Externí odkaz:
https://doaj.org/article/655fc44f419949709619df893851abda
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-68 (2019)
Abstract This work examines non-perturbative dynamics of a 2-dimensional QFT by using discrete ’t Hooft anomaly, semi-classics with circle compactification and bosonization. We focus on charge-q N-flavor Schwinger model, and also Wess-Zumino-Witten
Externí odkaz:
https://doaj.org/article/eb7c8322e4e0469b96a08d6425926703
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 2, Pp 1-33 (2019)
Abstract We investigate the phase structure of the compactified 2-dimensional nonlinear SU(3)/U(1)2 flag sigma model with respect to two θ-terms. Based on the circle compactification with the ℤ3-twisted boundary condition, which preserves an ’t
Externí odkaz:
https://doaj.org/article/dd7b00e4a8f6407599e49a14b1907c06
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 2, Pp 1-41 (2019)
Abstract We derive the semiclassical contributions from the real and complex bions in the two-dimensional ℂP N − 1 sigma model on ℝ×S 1 with a twisted boundary condition. The bion configurations are saddle points of the complexified Euclidean
Externí odkaz:
https://doaj.org/article/87b61dd012cb4710919c5ae38110bd8b
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 12, Pp 1-23 (2017)
Abstract Anomaly matching constrains low-energy physics of strongly-coupled field theories, but it is not useful at finite temperature due to contamination from high-energy states. The known exception is an ’t Hooft anomaly involving one-form symme
Externí odkaz:
https://doaj.org/article/b7f9b9595f7546a593fe2358d19624f5