Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Alonso Izquierdo, Alberto"'
Autor:
Almeida, Caio, Alonso-Izquierdo, Alberto, Fresneda, Rodrigo, Guilarte, Juan Mateos, Vassilevich, Dmitri
Publikováno v:
Phys. Rev. D 103, 125015 (2021)
We compute the vacuum fermion current in $(2+1)$ dimensional Jackiw-Rossi model by using the $1/m$ expansion. The current is expressed through a weighted $\eta$-function with a matrix weight. In the presence of such a weight, the usual proof of topol
Externí odkaz:
http://arxiv.org/abs/2103.06826
Autor:
Alonso-Izquierdo, Alberto
Publikováno v:
Commun. Nonlinear Sci. Numer. Simulat 85 (2020) 105251
In this paper the scattering between the non-topological kinks arising in a family of two-component scalar field theory models is analyzed. A winding charge is carried by these defects. As a consequence, two different classes of kink scattering proce
Externí odkaz:
http://arxiv.org/abs/1906.05040
Publikováno v:
Symmetry 9 (2016) 91
In this paper zero modes of fluctuation are dissected around the two species of BPS vortices existing in the critical Higgs phase, where the scalar and vector meson masses are equal, of a gauged $\mathbb{U}(1)$ nonlinear $\mathbb{CP}^1$-model. If $2\
Externí odkaz:
http://arxiv.org/abs/1607.00188
Publikováno v:
JHEP05 (2016), 1-36
In this paper the zero modes of fluctuation of cylindrically symmetric self-dual vortices are analyzed and described in full detail. These BPS topological defects arise at the critical point between Type II and Type I superconductors, or, equivalentl
Externí odkaz:
http://arxiv.org/abs/1602.09084
Publikováno v:
JHEP02 (2015) 139
Non-linear sigma models with scalar fields taking values on $\mathbb{C}\mathbb{P}^n$ complex manifolds are addressed. In the simplest $n=1$ case, where the target manifold is the $\mathbb{S}^2$ sphere, we describe the scalar fields by means of stereo
Externí odkaz:
http://arxiv.org/abs/1409.8419
In this paper we develop an spectral zeta function regularization procedure on the determinants of instanton fluctuation operators that describe the semi-classical order of tunnel effects bewtween degenerate vacua.
Comment: 16 pages, 2 figures,
Comment: 16 pages, 2 figures,
Externí odkaz:
http://arxiv.org/abs/1402.0703
Publikováno v:
JHEP01 (2014) 125
In this paper quantum effects are investigated in a very special two-scalar field model having a moduli space of BPS topological defects. In a $(1+1)$-dimensional space-time the defects are classically degenerate in mass kinks, but in $(3+1)$ dimensi
Externí odkaz:
http://arxiv.org/abs/1307.0740
Publikováno v:
Il Nuovo Cimento C, vol 36, n. 3 (2013) 3-14
In this paper we propose a generalization of the Gilkey-de Witt heat kernel expansion, designed to provide us with a precise estimation of the heat trace of non-negative Schroedinger type differential operators with non-trivial kernel over all the do
Externí odkaz:
http://arxiv.org/abs/1303.3138
Publikováno v:
Annals of Physics 331 (2013) 269-298
In this paper a new version of the DHN (Dashen-Hasslacher-Neveu) formula, which is used to compute the one-loop order kink mass correction in (1+1)-dimensional scalar field theory models, is constructed. The new expression is written in terms of the
Externí odkaz:
http://arxiv.org/abs/1212.0818
Publikováno v:
The European Physical Journal C, Volume 72, Number 10 (2012) 2170
In this paper we propose a refinement of the heat kernel/zeta function treatment of kink quantum fluctuations in scalar field theory, further analyzing the existence and implications of a zero energy fluctuation mode. Improved understanding of the in
Externí odkaz:
http://arxiv.org/abs/1207.0942