Zobrazeno 1 - 10
of 2 453
pro vyhledávání: '"Zamora R"'
In this article we analyze the role of an external electric field, in the weak field approximation, on $\pi$-$\pi$ scattering lengths. The discussion is presented in the frame of the linear sigma model. To achieve this, we take into account all one-l
Externí odkaz:
http://arxiv.org/abs/2404.01927
We compute the 1-loop vertex function of the QCD coupling in the presence of an ultra intense magnetic field. From the vertex function, we extract the effective coupling and show that it grows with increasing magnetic field. We consider the quark-glu
Externí odkaz:
http://arxiv.org/abs/2403.14478
Autor:
Ayala, Alejandro, Farias, Ricardo L. S., Hernández, L. A., Mizher, Ana Julia, Rendón, Javier, Villavicencio, Cristian, Zamora, R.
Publikováno v:
Phys. Rev. D 109, 074019 (2024)
We use the linear sigma model with quarks to study the magnetic-field-induced modifications on the longitudinal screening mass for the neutral pion at one-loop level. The effects of the magnetic field are introduced into the self-energy, which contai
Externí odkaz:
http://arxiv.org/abs/2311.13068
Using appropriate QCD finite energy sum rules, we discuss the influence of an external magnetic field and baryonic density on the axial-vector coupling constant $g_{A}$. This scenario corresponds to a magnetar environment. We found that $g_{A}$ decre
Externí odkaz:
http://arxiv.org/abs/2309.05807
Publikováno v:
Phys. Rev. D 108 (2023) 074024
The nucleon axial-vector coupling constant $g_A$ is studied in the presence of an external magnetic field, and in dense nuclear environments, to emulate nuclear matter in magnetars. For this purpose we use QCD finite energy sum rules for two-current
Externí odkaz:
http://arxiv.org/abs/2308.05663
Autor:
Ayala Alejandro, Dominguez C. A., Hernandez-Ortiz Saul, Hernandez L. A., Loewe M., Manreza Paret D., Zamora R.
Publikováno v:
EPJ Web of Conferences, Vol 206, p 02001 (2019)
The properties of strongly interacting matter at finite temperature in a magnetized medium have received a great deal of attention in recent years, mainly due to the so called Inverse Magnetic Catalysis phenomenon whereby the pseudo critical quiral p
Externí odkaz:
https://doaj.org/article/6f9fb1b541684f4b8946781ac2c3b417
Autor:
Ayala, Alejandro, Castaño-Yepes, Jorge David, Hernández, L. A., Mizher, Ana Julia, Tejeda-Yeomans, María Elena, Zamora, R.
Having in mind the pre-equilibrium stage in peripheral heavy-ion collisions as a possible scenario for the production of electromagnetic radiation, we compute the two-gluon one-photon vertex in the presence of an intense magnetic field at one-loop or
Externí odkaz:
http://arxiv.org/abs/2209.09364
Publikováno v:
Earth Sciences Research Journal, Vol 11, Iss 1, Pp 5-19 (2007)
Based on the general information included within the ANH Exploration and Production Information Service, the information distribution densities of the Colombian territory were determined. Thesedensities are referred in seismic length per square kilom
Externí odkaz:
https://doaj.org/article/cca767bbaccf43a68a83afa926af43fe
In this article we address the subject of finding the behavior of a charged scalar field $\phi$ under the influence of external constant magnetic and electric fields, perpendicular to each other, including also thermal effects. For this purpose we de
Externí odkaz:
http://arxiv.org/abs/2207.12387
Autor:
Loewe, M., Zamora, R.
In this article we revisit the discussion of renormalons in the frame of a scalar self-interacting $\lambda \phi^{4}$ theory in the presence of thermomagnetic effects, i.e magnetic and thermal effects. Our results for the evolution of the residues is
Externí odkaz:
http://arxiv.org/abs/2202.08873