Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Avner K"'
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 11, Pp 1-42 (2022)
Abstract We study the dynamics of chiral SU(N) gauge theories. These contain Weyl fermions in the symmetric or anti-symmetric representation of the gauge group, together with further fermions in the fundamental and anti-fundamental. We revisit an old
Externí odkaz:
https://doaj.org/article/f6d06ed11da942f89afc726a25f38b7a
Autor:
Avner Karasik
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 2, Pp 1-39 (2022)
Abstract 4d gauge theories with massless fermions typically have axial U(1) transformations that suffer from the ABJ anomaly. One can modify the theory of interest by adding more fields in a way that restores the axial symmetry, and use it to derive
Externí odkaz:
https://doaj.org/article/6d141207e79c4ba08b0bccb6dbf4d96f
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:
Avner Karasik
Publikováno v:
SciPost Physics, Vol 15, Iss 1, p 002 (2023)
In this work we propose a way to promote the anomalous axial $U(1)$ transformations to exact non-invertible $U(1)$ symmetries. We discuss the procedure of coupling the non-invertible symmetry to a (dynamical or background) gauge field. We show that a
Externí odkaz:
https://doaj.org/article/662315083a0547caaad7065ab2569c7a
Autor:
Avner Karasik
Publikováno v:
Symmetry, Vol 14, Iss 11, p 2347 (2022)
While the identification of skyrmions as the low energy description of baryons in Nf≥2 QCD is known for decades, a parallel construction for the case of Nf=1 is more mysterious. In the case of one fermionic flavor, there is no chiral symmetry break
Externí odkaz:
https://doaj.org/article/3e80bc6e806d439583cff4026c37bcad
Autor:
Avner Karasik, Zohar Komargodski
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 5, Pp 1-43 (2019)
Abstract We study the phases of the SU(N 1) × SU(N 2) gauge theory with a bifundamental fermion in 3+1 dimensions. We show that the discrete anomalies and Berry phases associated to the one-form symmetry of the theory allow for several topologically
Externí odkaz:
https://doaj.org/article/56ca56c727b64021b5aa79c5e3a7bd5f
Autor:
Efrat Gerchkovitz, Avner Karasik
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 3, Pp 1-55 (2019)
Abstract We use supersymmetric localization techniques to study the low-energy dynamics of BPS vortex-strings in four-dimensional N = 2 $$ \mathcal{N}=2 $$ theories. We focus on theories with SU(N c ) × U(1) gauge group and N f hypermultiplets, all
Externí odkaz:
https://doaj.org/article/6d1288ebf1d64704bfd6468f256133f0
Autor:
Avner Karasik
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 12, Pp 1-54 (2018)
Abstract We study 1 2 $$ \frac{1}{2} $$ -BPS vortex-strings in four dimensional N $$ \mathcal{N} $$ = 2 supersymmetric quiver theories with gauge group SU(N) n × U(1). The matter content of the quiver can be represented by what we call a tetris diag
Externí odkaz:
https://doaj.org/article/3272c9e737b74baf8d622cc5b35a092d
Autor:
Efrat Gerchkovitz, Avner Karasik
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 2, Pp 1-30 (2018)
Abstract We study vortex-strings in four-dimensional N=2 $$ \mathcal{N}=2 $$ supersymmetric SU(N c ) × U(1) gauge theories with N f hypermultiplets in the fundamental representation of SU(N c ) and general U(1) charges. If N f > N c , the vacuum is
Externí odkaz:
https://doaj.org/article/4aedb9b17efb423292ccfafd08bca207
Autor:
Avner Karasik
Publikováno v:
SciPost Physics, Vol 10, Iss 6, p 138 (2021)
We further explore a recent proposal that the vector mesons in QCD have a special role as Chern-Simons fields on various QCD objects such as domain walls and the one flavored baryons. We compute contributions to domain wall theories and to the bar
Externí odkaz:
https://doaj.org/article/102d6b3b1a3c4a99b4688b71806fb86b