Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Davide R. Campagnari"'
Publikováno v:
The European Physical Journal Special Topics. 229:3351-3361
We investigate the equal-time (static) quark propagator in Coulomb gauge within the Hamiltonian approach to QCD in d = 2 spatial dimensions. Although the underlying Clifford algebra is very different from its counterpart in d = 3, the gap equation fo
Autor:
Hugo Reinhardt, Davide R. Campagnari
Publikováno v:
Physical Review
We investigate the equal-time (static) quark propagator in Coulomb gauge within the Hamiltonian approach to QCD. We use a non-Gaussian vacuum wave functional which includes the coupling of the quarks to the spatial gluons. The expectation value of th
Publikováno v:
Proceedings of XIII Quark Confinement and the Hadron Spectrum — PoS(Confinement2018).
Autor:
Davide R. Campagnari, Hugo Reinhardt
Publikováno v:
Proceedings of XIII Quark Confinement and the Hadron Spectrum — PoS(Confinement2018).
Publikováno v:
Universe, Vol 5, Iss 2, p 40 (2019)
A novel approach to the Hamiltonian formulation of quantum field theory at finite temperature is presented. The temperature is introduced by compactification of a spatial dimension. The whole finite-temperature theory is encoded in the ground state o
Autor:
Hugo Reinhardt, Davide R. Campagnari
Publikováno v:
Physical Review
The variational Hamiltonian approach to Quantum Chromodynamics in Coulomb gauge is investigated within the framework of the canonical recursive Dyson--Schwinger equations. The dressing of the quark propagator arising from the variationally determined
Autor:
Davide R. Campagnari, P. Vastag, E. Ebadati, Giuseppe Burgio, Hugo Reinhardt, Jan Heffner, Hannes Vogt, Markus Quandt
Publikováno v:
Advances in High Energy Physics
Advances in High Energy Physics, Vol 2018 (2018)
Advances in High Energy Physics, Vol 2018 (2018)
I report on recent results obtained within the Hamiltonian approach to QCD in Coulomb gauge. Furthermore this approach is compared to recent lattice data, which were obtained by an alternative gauge fixing method and which show an improved agreement
Publikováno v:
EPJ Web of Conferences, Vol 137, p 03004 (2017)
Dyson--Schwinger equations are an established, powerful non-perturbative tool for QCD. In the Hamiltonian formulation of a quantum field theory they can be used to perform variational calculations with non-Gaussian wave functionals. By means of the D
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b41238c10214e92b44237ba340a8532c
http://arxiv.org/abs/1610.06456
http://arxiv.org/abs/1610.06456
The variational approach to QCD in Coulomb gauge is revisited. By assuming the non-Abelian Coulomb potential to be given by the sum of its infrared and ultraviolet parts, i.e. by a linearly rising potential and an ordinary Coulomb potential, and by u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cb73d23f339b105497dc93301917444
http://arxiv.org/abs/1608.06820
http://arxiv.org/abs/1608.06820
Publikováno v:
Physical Review D. 93
The variational approach to QCD in Coulomb gauge developed previously by the T\"ubingen group is improved by enlarging the space of quark trial vacuum wave functionals through a new Dirac structure in the quark-gluon coupling. Our ansatz for the quar