scholarly journals Nucleon isovector axial charge in 2+1-flavor domain-wall QCD with physical mass

2019 ◽  
Author(s):  
Shigemi Ohta ◽  
Keyword(s):  
Domain Wall ◽  
Axial Charge ◽  
Physical Mass

scholarly journals Nucleon axial charge from quenched lattice QCD with domain wall fermions

2003 ◽  
Vol 68 (5) ◽  
Author(s):  
S. Sasaki ◽  
K. Orginos ◽  
S. Ohta ◽  
T. Blum
Keyword(s):  
Domain Wall ◽  
Lattice Qcd ◽  
Axial Charge ◽  
Domain Wall Fermions

scholarly journals Gravitational wave signatures from domain wall and strong first-order phase transitions in a two complex scalar extension of the Standard Model

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Avik Paul ◽  
Upala Mukhopadhyay ◽  
Debasish Majumdar
Keyword(s):  
Phase Transition ◽  
Domain Wall ◽  
Early Universe ◽  
Order Phase Transition ◽  
Domain Walls ◽  
Mass Eigenstates ◽  
First Order ◽  
First Order Phase Transition ◽  
Physical Mass ◽  
First Order Phase

Abstract We consider a simple extension of Standard Model by adding two complex singlet scalars with a U(1) symmetry. A discrete $$ {\mathcal{Z}}_2\times {\mathcal{Z}}_2^{\prime } $$ Z 2 × Z 2 ′ symmetry is imposed in the model and the added scalars acquire a non zero vacuum expectation value (VEV) when the imposed symmetry is broken spontaneously. The real (CP even) parts of the complex scalars mix with the SM Higgs and give three physical mass eigenstates. One of these physical mass eigenstates is attributed to the SM like Higgs boson with mass 125.09 GeV. In the present scenario, domain walls are formed in the early Universe due to the breaking of discrete $$ {\mathcal{Z}}_2\times {\mathcal{Z}}_2^{\prime } $$ Z 2 × Z 2 ′ symmetry. In order to ensure the unstability of the domain wall this discrete symmetry is also explicitly broken by adding a bias potential to the Lagrangian. The unstable annihilating domain walls produce a significant amount of gravitational waves (GWs). In addition, we also explore the possibility of the production of GW emission from the strong first-order phase transition. We calculate the intensities and frequencies of each of such gravitational waves originating from two different phenomena of the early Universe namely annihilating domain walls and strong first-order phase transition. Finally, we investigate the observational signatures from these GWs at the future GW detectors such as ALIA, BBO, DECIGO, LISA, TianQin, Taiji, aLIGO, aLIGO+ and pulsar timing arrays such as SKA, IPTA, EPTA, PPTA, NANOGrav11 and NANOGrav12.5.

scholarly journals Nucleon Axial Charge in (2+1)-Flavor Dynamical-Lattice QCD with Domain-Wall Fermions

2008 ◽  
Vol 100 (17) ◽  
Author(s):  
T. Yamazaki ◽  
Y. Aoki ◽  
T. Blum ◽  
H. W. Lin ◽  
M. F. Lin ◽  
...  
Keyword(s):  
Domain Wall ◽  
Lattice Qcd ◽  
Axial Charge ◽  
Domain Wall Fermions ◽  
Dynamical Lattice

scholarly journals Nucleon axial charge from quenched lattice QCD with domain wall fermions and improved gauge action

2002 ◽  
Vol 106-107 ◽  
pp. 302-304 ◽  
Author(s):  
Shoichi Sasaki ◽  
Tom Blum ◽  
Shigemi Ohta ◽  
Kostas Orginos
Keyword(s):  
Domain Wall ◽  
Lattice Qcd ◽  
Axial Charge ◽  
Gauge Action ◽  
Domain Wall Fermions

scholarly journals Nucleon mass and isovector couplings in 2+1 -flavor dynamical domain-wall lattice QCD near physical mass

2020 ◽  
Vol 101 (3) ◽  
Author(s):  
Michael Abramczyk ◽  
Thomas Blum ◽  
Taku Izubuchi ◽  
Chulwoo Jung ◽  
Meifeng Lin ◽  
...  
Keyword(s):  
Domain Wall ◽  
Lattice Qcd ◽  
Nucleon Mass ◽  
Physical Mass
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