Zobrazeno 1 - 10
of 1 721
pro vyhledávání: '"Löwe, M."'
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
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
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
In this article we explore the phase diagram associated to the symmetry breaking of a scalar self interacting theory, induced by temperature and the presence of an external electric field. For such purpose, first we obtain the boson propagator, in th
Externí odkaz:
http://arxiv.org/abs/2112.13872
Publikováno v:
In Nuclear and Particle Physics Proceedings April 2024 343:43-47
Publikováno v:
Phys. Rev. D 104, 016020 (2021)
In this article we extend a previous discussion about the influence of an external magnetic field on renormalons in a self interacting scalar theory by including now temperature effects, in the imaginary formalism, together with an external weak exte
Externí odkaz:
http://arxiv.org/abs/2105.01156
Publikováno v:
Phys. Rev. D 104, 016006 (2021)
We revisit the calculation of the fermion self-energy in QED in the presence of a magnetic field. We show that, after carrying out the renormalization procedure and identifying the most general perturbative tensor structure for the modified fermion {
Externí odkaz:
http://arxiv.org/abs/2104.04019
Publikováno v:
Phys. Conf. Ser. 1602, 012027 (2020)
One of the advantages of the finite energy sum rules is the fact that every operator in the operator product expansion series can be selected individually by the use of an appropriate kernel function which removes other operator poles. This character
Externí odkaz:
http://arxiv.org/abs/2007.05642
Publikováno v:
Phys. Rev. D 101, 036016 (2020)
We present an analytic method to compute the one-loop magnetic correction to the gluon polarization tensor starting from the Landau-level representation of the quark propagator in the presence of an external magnetic field. We show that the general e
Externí odkaz:
http://arxiv.org/abs/1912.07136