Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Nakarin Lohitsiri"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-36 (2024)
Abstract We present a new non-perturbative ’t Hooft anomaly afflicting a quantum field theory with symmetry group G = U(1) × ℤ2 in four dimensions. We use the Adams spectral sequence to compute that the bordism group $${\Omega }_{5}^{{\text{Spin
Externí odkaz:
https://doaj.org/article/4037143bfedb425ba9f3f56b30461949
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 12, Pp 1-62 (2023)
Abstract We study 4-dimensional SU(N) gauge theory with one adjoint Weyl fermion and fundamental matter — either bosonic or fermionic. Symmetries, their ’t Hooft anomalies, and the Vafa-Witten-Weingarten theorems strongly constrain the possible b
Externí odkaz:
https://doaj.org/article/dac7e97db84e463286d642a994a0bf2d
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 7, Pp 1-54 (2023)
Abstract 2-group symmetries arise in physics when a 0-form symmetry G [0] and a 1-form symmetry H [1] intertwine, forming a generalised group-like structure. Specialising to the case where both G [0] and H [1] are compact, connected, abelian groups (
Externí odkaz:
https://doaj.org/article/21247d63fe59467492b94b2fe3936c62
Autor:
Nakarin Lohitsiri, Tin Sulejmanpasic
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 10, Pp 1-29 (2022)
Abstract ’t Hooft anomaly matching is powerful for constraining the low energy phases of gauge theories. In 3d one common anomaly is the parity anomaly in a T-symmetric theory where one cannot gauge the global symmetry group without breaking the ti
Externí odkaz:
https://doaj.org/article/ad93986994b04948af9cee828d8f654e
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 9, Pp 1-45 (2022)
Abstract We use cobordism theory to analyse anomalies of finite non-abelian symmetries in 4 spacetime dimensions. By applying the method of ‘anomaly interplay’, which uses functoriality of cobordism and naturality of the η-invariant to relate an
Externí odkaz:
https://doaj.org/article/2abf0b91fc894b4588fb96ebad9aef39
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 1, Pp 1-16 (2022)
Abstract We study two well-known SU(N) chiral gauge theories with fermions in the symmetric, anti-symmetric and fundamental representations. We give a detailed description of the global symmetry, including various discrete quotients. Recent work argu
Externí odkaz:
https://doaj.org/article/632f145b02fa43abbfb8706226d4a881
Autor:
Joe Davighi, Nakarin Lohitsiri
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 5, Pp 1-30 (2021)
Abstract In this note we review the role of homotopy groups in determining non-perturbative (henceforth ‘global’) gauge anomalies, in light of recent progress understanding global anomalies using bordism. We explain why non-vanishing of π d (G)
Externí odkaz:
https://doaj.org/article/bd2ebfeedb93498c9c582e7c36dfbdbf
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 7, Pp 1-51 (2020)
Abstract We analyse global anomalies and related constraints in the Standard Model (SM) and various Beyond the Standard Model (BSM) theories. We begin by considering four distinct, but equally valid, versions of the SM, in which the gauge group is ta
Externí odkaz:
https://doaj.org/article/b160ffe44efc45deb93ba87eb6bed755
Autor:
Joe Davighi, Nakarin Lohitsiri
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 5, Pp 1-21 (2020)
Abstract We discuss anomaly cancellation in U(2) gauge theories in four dimensions. For a U(2) gauge theory defined with a spin structure, the vanishing of the bordism group Ω 5 Spin $$ {\Omega}_5^{\mathrm{Spin}} $$ (BU(2)) implies that there can be
Externí odkaz:
https://doaj.org/article/057b67423ef94413aab260bf7d5615b5
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 4, Pp 1-43 (2018)
Abstract Yang-Mills instantons are solitonic particles in d = 4 + 1 dimensional gauge theories. We construct and analyse the quantum Hall states that arise when these particles are restricted to the lowest Landau level. We describe the ground state w
Externí odkaz:
https://doaj.org/article/8e2589e0d20a4c4686d80ba5a3fabdcf