Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Jia, Shaoyang"'
Autor:
Jia, Shaoyang
The Schwinger--Dyson equations (SDEs) are coupled integral equations for the Green's functions of a quantum field theory (QFT). The SDE approach is the analytic nonperturbative method for solving strongly coupled QFTs. When applied to QCD, this appro
Externí odkaz:
http://arxiv.org/abs/2407.19626
Autor:
Jia, Shaoyang
We propose a method to solve for the pseudoscalar bound state amplitude of a fermion and an antifermion from its Bethe--Salpeter equation (BSE) in the Minkowski space applying spectral representations. With the dressing of the fermion propagators spe
Externí odkaz:
http://arxiv.org/abs/2402.01125
Autor:
Jia, Shaoyang, Cloët, Ian
Within the framework provided by quantum chromodynamics's Schwinger-Dyson equations (SDEs), the pion's electromagnetic form factor is computed using solutions of the Bethe-Salpeter equation (BSE) that have finite spacial momentum, and therefore allow
Externí odkaz:
http://arxiv.org/abs/2402.00285
Autor:
Jia, Shaoyang, Cloët, Ian
In the Euclidean-space formulation of integral equations for the structure of quantum chromodynamics (QCD) bound states, the quark propagators with complex-valued momentum are densely sampled. We therefore propose an accurate and efficient algorithm
Externí odkaz:
http://arxiv.org/abs/2401.11019
Autor:
Jia, Shaoyang
Publikováno v:
Phys.Rev.D 109 (2024) 036020
In order to solve the Bethe-Salpeter equation (BSE) in the Minkowski space, we first introduce the Nakanishi integral representations of the Bethe-Salpeter amplitude (BSA) and the Bethe-Salpeter wave function (BSWF). We then derive the explicit integ
Externí odkaz:
http://arxiv.org/abs/2312.08698
Autor:
Adhikari, Lekha, Mondal, Chandan, Nair, Sreeraj, Xu, Siqi, Jia, Shaoyang, Zhao, Xingbo, Vary, James P.
Publikováno v:
Phys. Rev. D 104, 114019 (2021)
We present the generalized parton distributions (GPDs) for the valence quarks of the pion and the kaon in both momentum space and position space within the basis light-front quantization framework. These GPDs are obtained from the eigenvectors of a l
Externí odkaz:
http://arxiv.org/abs/2110.05048
Publikováno v:
Phys. Rev. D 104, 094034 (2021)
We obtain the distribution amplitude (DA) of the pion from its light-front wave functions in the basis light-front quantization framework. This light-front wave function of the pion is given by the lowest eigenvector of a light-front effective Hamilt
Externí odkaz:
http://arxiv.org/abs/2109.02279
Autor:
Kreshchuk, Michael, Jia, Shaoyang, Kirby, William M., Goldstein, Gary, Vary, James P., Love, Peter J.
Publikováno v:
Phys. Rev. A 103, 062601 (2021)
The analogy between quantum chemistry and light-front quantum field theory, first noted by Kenneth G. Wilson, serves as motivation to develop light-front quantum simulation of quantum field theory. We demonstrate how calculations of hadron structure
Externí odkaz:
http://arxiv.org/abs/2011.13443
Publikováno v:
Phys. Rev. D 104, 016002 (2021)
We study the semileptonic decay of the $B_c (0^-)$ to charmonia through the bottom-to-charm-quark electroweak current in the framework of basis light-front quantization. Explicitly, we calculate the weak transition form factors for processes of $B_c$
Externí odkaz:
http://arxiv.org/abs/2011.05454
Autor:
Kreshchuk, Michael, Jia, Shaoyang, Kirby, William M., Goldstein, Gary, Vary, James P., Love, Peter J.
Publikováno v:
Entropy 2021, 23, 597
We present a quantum algorithm for simulation of quantum field theory in the light-front formulation and demonstrate how existing quantum devices can be used to study the structure of bound states in relativistic nuclear physics. Specifically, we app
Externí odkaz:
http://arxiv.org/abs/2009.07885