scholarly journals Renormalization factor of four fermi operators with clover fermion and Iwasaki gauge action

2012 ◽  
Author(s):  
Yusuke Taniguchi
Keyword(s):  
Gauge Action ◽  
Renormalization Factor

scholarly journals Non-perturbative determination of cV, ZV and ZS/ZP in Nf = 3 lattice QCD

2018 ◽  
Vol 175 ◽  
pp. 10004 ◽  
Author(s):  
Jochen Heitger ◽  
Fabian Joswig ◽  
Anastassios Vladikas ◽  
Christian Wittemeier
Keyword(s):  
Lattice Qcd ◽  
Quark Mass ◽  
Numerical Evaluation ◽  
Vector Current ◽  
Tree Level ◽  
Gauge Action ◽  
Renormalization Factor ◽  
Preliminary Results ◽  
Renormalization Constants

We report on non-perturbative computations of the improvement coefficient cV and the renormalization factor ZV of the vector current in three-flavour O(a) improved lattice QCD with Wilson quarks and tree-level Symanzik improved gauge action. To reduce finite quark mass effects, our improvement and normalization conditions exploit massive chiral Ward identities formulated in the Schrödinger functional setup, which also allow deriving a new method to extract the ratio ZS/ZP of scalar to pseudoscalar renormalization constants. We present preliminary results of a numerical evaluation of ZV and cV along a line of constant physics with gauge couplings corresponding to lattice spacings of about 0:09 fm and below, relevant for phenomenological applications.

Introduction of renormalization factor for spin-wave energy into Bogolyubov-Tyablikov theory

1995 ◽  
Vol 102 (2) ◽  
pp. 219-223
Author(s):  
V. A. Bamburov ◽  
A. A. Kazakov ◽  
V. N. Frolov
Keyword(s):  
Spin Wave ◽  
Wave Energy ◽  
Renormalization Factor

scholarly journals Electric Dipole Moment Results from lattice QCD

2018 ◽  
Vol 175 ◽  
pp. 06018 ◽  
Author(s):  
Jack Dragos ◽  
Thomas Luu ◽  
Andrea Shindler ◽  
Jordy de Vries
Keyword(s):  
Renormalization Group ◽  
Dipole Moment ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Gradient Flow ◽  
Gauge Fields ◽  
Electric Dipole Moments ◽  
Gauge Action ◽  
Promising Tool ◽  
Local Operators

We utilize the gradient flow to define and calculate electric dipole moments induced by the strong QCD θ-term and the dimension-6 Weinberg operator. The gradient flow is a promising tool to simplify the renormalization pattern of local operators. The results of the nucleon electric dipole moments are calculated on PACS-CS gauge fields (available from the ILDG) using Nf = 2+1, of discrete size 323×64 and spacing a ≃ 0.09 fm. These gauge fields use a renormalization-group improved gauge action and a nonperturbatively O(a) improved clover quark action at β = 1.90, with cSW = 1.715. The calculation is performed at pion masses of mπ ≃ 411, 701 MeV.

scholarly journals Gauge action improvement and smearing

2005 ◽  
Vol 172 (3) ◽  
pp. 163-186 ◽  
Author(s):  
Stephan Dürr
Keyword(s):  
Gauge Action

scholarly journals QUANTIZATION OF THE G-CONNECTIONS VIA THE TANGENT GROUPOID

2013 ◽  
Vol 10 (09) ◽  
pp. 1320016
Author(s):  
ALAN LAI
Keyword(s):  
Hilbert Space ◽  
Convolution Operators ◽  
Gauge Action ◽  
Dirac Type

A description of the space of G-connections using the tangent groupoid is given. As the tangent groupoid parameter is away from zero, the G-connections act as convolution operators on a Hilbert space. The gauge action is examined in the tangent groupoid description of the G-connections. Tetrads are formulated as Dirac type operators. The connection variables and tetrad variables in Ashtekar's gravity are presented as operators on a Hilbert space.

scholarly journals Baryon interactions from lattice QCD with physical quark masses – Nuclear forces and ΞΞ forces –

2018 ◽  
Vol 175 ◽  
pp. 05009 ◽  
Author(s):  
Takumi Doi ◽  
Takumi Iritani ◽  
Sinya Aoki ◽  
Shinya Gongyo ◽  
Tetsuo Hatsuda ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Heavy Ion ◽  
Heavy Ion Collision ◽  
Nuclear Forces ◽  
Gauge Action ◽  
Quark Masses ◽  
Momentum Correlation ◽  
Coupled Channel ◽  
Ion Collision

We present the latest lattice QCD results for baryon interactions obtained at nearly physical quark masses. Nf = 2 + 1 nonperturbatively O(a)-improved Wilson quark action with stout smearing and Iwasaki gauge action are employed on the lattice of (96a)4 ≃(8.1fm)4 with a-1 ≃2.3 GeV, where mπ ≃146 MeV and mK ≃525 MeV. In this report, we study the two-nucleon systems and two-Ξ systems in 1S0 channel and 3S1-3D1 coupled channel, and extract central and tensor interactions by the HAL QCD method. We also present the results for the NΩ interaction in 5S2 channel which is relevant to the NΩ pair-momentum correlation in heavy-ion collision experiments.

scholarly journals FIRST LATTICE EVIDENCE FOR A NONTRIVIAL RENORMALIZATION OF THE HIGGS CONDENSATE

1998 ◽  
Vol 13 (29) ◽  
pp. 2361-2367 ◽  
Author(s):  
P. CEA ◽  
L. COSMAI ◽  
M. CONSOLI
Keyword(s):  
Wave Function ◽  
Continuum Limit ◽  
Higgs Mass ◽  
Lattice Simulation ◽  
Wave Function Renormalization ◽  
Renormalization Factor ◽  
Physical Mass ◽  
The Difference ◽  
Ising Limit ◽  
The Continuum

General arguments related to "triviality" predict that, in the broken phase of (λΦ4)4 theory, the condensate <Φ> rescales by a factor Zφ different from the conventional wave function renormalization factor, Z prop . Using a lattice simulation in the Ising limit, we measure Zφ= m2χ from the physical mass and susceptibility and Z prop from the residue of the shifted-field propagator. We find that the two Z's differ, with the difference increasing rapidly as the continuum limit is approached. Since Zφ affects the relation of <Φ> to the Fermi constant, it can sizably affect the present bounds on the Higgs mass.

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