Zobrazeno 1 - 10
of 100
pro vyhledávání: '"De, Asit K."'
Autor:
De, Asit K., Sarkar, Mugdha
An extensive study of the compact $U(1)$ lattice gauge theory with a higher derivative gauge-fixing term and a suitable counter-term has been undertaken to determine the nature of the possible continuum limits for a wide range of the parameters, espe
Externí odkaz:
http://arxiv.org/abs/1709.04831
Autor:
De, Asit K., Sarkar, Mugdha
Publikováno v:
Phys. Rev. D 93, 114504 (2016)
Pure {\it compact} $U(1)$ lattice gauge theory exhibits a phase transition at gauge coupling $g \sim {\cal{O}}(1)$ separating a familiar weak coupling Coulomb phase, having free massless photons, from a strong coupling phase. However, the phase trans
Externí odkaz:
http://arxiv.org/abs/1602.04142
Autor:
Chowdhury, Abhishek, De, Asit K., De Sarkar, Sangita, Harindranath, A., Maiti, Jyotirmoy, Mondal, Santanu, Sarkar, Anwesa
We calculate pion mass, pion decay constant, PCAC quark mass and nucleon mass in two flavour lattice QCD with unimproved Wilson fermion and gauge actions. Simulations are performed using DD-HMC algorithm at two lattice spacings and two volumes for se
Externí odkaz:
http://arxiv.org/abs/1212.0717
We study the two-point Topological Charge Density Correlator (TCDC) in lattice QCD with two degenerate flavours of naive Wilson fermions and unimproved Wilson gauge action at two values of lattice spacings and different volumes, for a range of quark
Externí odkaz:
http://arxiv.org/abs/1211.7169
Autor:
Chowdhury, Abhishek, De, Asit K., De Sarkar, Sangita, Harindranath, A., Maiti, Jyotirmoy, Mondal, Santanu, Sarkar, Anwesa
We perform an extensive study of autocorrelation of several observables in lattice QCD with two degenerate flavours of naive Wilson fermions and unimproved Wilson gauge action using DD-HMC algorithm. We show that (1) at a given lattice spacing, autoc
Externí odkaz:
http://arxiv.org/abs/1209.3915
Topological charge density correlator in Lattice QCD with two flavours of unimproved Wilson fermions
Publikováno v:
JHEP11(2012)029
We study the two-point Topological Charge Density Correlator (TCDC) in lattice QCD with two degenerate flavours of unimproved Wilson fermions and Wilson gauge action at two values of lattice spacings and different volumes, for a range of quark masses
Externí odkaz:
http://arxiv.org/abs/1208.4235
Autor:
Chowdhury, Abhishek, De, Asit K., De Sarkar, Sangita, Harindranath, A., Mondal, Santanu, Sarkar, Anwesa, Maiti, Jyotirmoy
We study the topological charge and the topological susceptibility in lattice QCD with two degenerate flavors of naive Wilson fermions at two values of lattice spacings and different volumes, for a range of quark masses. Configurations are generated
Externí odkaz:
http://arxiv.org/abs/1111.1812
Autor:
Chowdhury, Abhishek, De, Asit K., De Sarkar, Sangita, Harindranath, A., Mondal, Santanu, Sarkar, Anwesa, Maiti, Jyotirmoy
We address a long standing problem regarding topology in lattice simulations of QCD with unimproved Wilson fermions. Earlier attempt with unimproved Wilson fermions at \beta =5.6 to verify the suppression of topological susceptibility with decreasing
Externí odkaz:
http://arxiv.org/abs/1110.6013
Publikováno v:
JHEP 07 (2011) 117
We demonstrate the effectiveness of averaging over the Wilson parameter r (which has been proposed earlier) in removing the cutoff effects of naive Wilson fermions in both the anomaly term and the pseudoscalar density term in the flavor singlet axial
Externí odkaz:
http://arxiv.org/abs/1105.0762
Publikováno v:
Phys.Lett.B682:150-154,2009
The flavour singlet axial Ward identity with Osterwalder-Seiler twisted mass Wilson fermion action is studied on a finite lattice, with finite fermion mass and the Wilson parameter r up to 1. Approach to the infinite volume chiral limit and emergence
Externí odkaz:
http://arxiv.org/abs/0910.5611