Lattice study of D and Ds meson form factors with twisted boundary conditions

2017 ◽  
Vol 53 (3) ◽  
Author(s):  
Ning Li ◽  
Ya-Jie Wu
Keyword(s):  
Boundary Conditions ◽  
Form Factors ◽  
Ds Meson ◽  
Twisted Boundary Conditions

Electromagnetic form factor of Ds∗ meson from Nf = 2 twisted mass lattice QCD

2019 ◽  
Vol 34 (30) ◽  
pp. 1950194 ◽  
Author(s):  
Ning Li ◽  
Ya-Jie Wu
Keyword(s):  
Form Factor ◽  
Quantum Chromodynamics ◽  
Electromagnetic Form Factor ◽  
Form Factors ◽  
Electromagnetic Form Factors ◽  
Lattice Quantum Chromodynamics ◽  
Twisted Mass ◽  
Lattice Quantum ◽  
Ds Meson ◽  
Twisted Boundary Conditions

We investigate the electromagnetic form factor of [Formula: see text] meson using [Formula: see text] twisted mass lattice quantum chromodynamics gauge configurations. The numerical simulations are carried out under twisted boundary conditions which are helpful to increase the resolution in momentum space. We determine electromagnetic form factors with more small four-momentum transfer, and further fit the charge radius for [Formula: see text] meson.

scholarly journals Entanglement in Finite Quantum Systems Under Twisted Boundary Conditions

2018 ◽  
Vol 48 (5) ◽  
pp. 451-466
Author(s):  
Krissia Zawadzki ◽  
Irene D’Amico ◽  
Luiz N. Oliveira
Keyword(s):  
Boundary Conditions ◽  
Quantum Systems ◽  
Finite Quantum Systems ◽  
Twisted Boundary Conditions

scholarly journals Color structure of gluon field magnetic mass

2019 ◽  
Vol 34 (09) ◽  
pp. 1950052
Author(s):  
Natalia V. Kolomoyets ◽  
Vladimir V. Skalozub
Keyword(s):  
Monte Carlo ◽  
Boundary Conditions ◽  
Monte Carlo Simulations ◽  
Finite Temperature ◽  
Color Structure ◽  
Enhancing Factor ◽  
Abelian Field ◽  
Chromomagnetic Field ◽  
Magnetic Mass ◽  
Twisted Boundary Conditions

The color structure of the gluon field magnetic mass is investigated in the lattice SU(2) gluodynamics. To realize that the interaction between a monopole–antimonopole string and external neutral Abelian chromomagnetic field flux is considered. The string is introduced in the way proposed by Srednicki and Susskind. The neutral Abelian field flux is introduced through the twisted boundary conditions. Monte Carlo simulations are performed on 4D lattices at finite temperature. It is shown that the presence of the Abelian field flux weakens the screening of the string field. That means decreasing the gluon magnetic mass for this environment. The contribution of the neutral Abelian field has the form of “enhancing” factor in the fitting functions. This behavior independently confirms the long-range nature of the neutral Abelian field reported already in the literature. The comparison with analytic calculations is given.

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