Zobrazeno 1 - 10
of 521
pro vyhledávání: '"Santangelo, E."'
We investigate the existence (or lack thereof) of the chiral magnetic effect in the framework of finite temperature field theory, studied through the path integral approach and regularized via the zeta function technique. We show that, independently
Externí odkaz:
http://arxiv.org/abs/1910.11425
Publikováno v:
Phys. Rev. B 97, 155406 (2018)
We investigate, in the framework of macroscopic Dirac model, the spectrum, charge density and conductivity of metallic armchair graphene nanoribbons in presence of different mass terms. We reveal the conditions and symmetries governing the presence o
Externí odkaz:
http://arxiv.org/abs/1803.02760
We present a detailed analytic study on the three-dimensional sphere of the most popular candidates for $C$-functions, both for Dirac and scalar free massive fields. We discuss to which extent the effective action, the R\'enyi entanglement entropy an
Externí odkaz:
http://arxiv.org/abs/1705.00071
Autor:
Santangelo, E., Carnevale, M., Migliori, C.A., Picarella, M.E., Dono, G., Mazzucato, A., Gallucci, F.
Publikováno v:
In Biomass and Bioenergy October 2020 141
Publikováno v:
Theoretical and Mathematical Physics, 187(1): 497-510 (2016)
We establish some properties of the zeroes of sums and differences of contiguous Bessel functions of the first kind. As a byproduct, we also prove that the zeroes of the derivatives of Bessel functions of the first kind of different orders are interl
Externí odkaz:
http://arxiv.org/abs/1407.0615
Publikováno v:
JHEP 01 (2015) 078
We analyze the renormalization group (RG) flow of the temperature independent term of the entropy in the high temperature limit \beta/a<<1 of a massive field theory in 3-dimensional spherical spaces M_3 with constant curvature 6/a^2. For masses lower
Externí odkaz:
http://arxiv.org/abs/1406.6602
Publikováno v:
Eur. Phys. J. B 87 (2014) 50
We consider gated graphene nanoribbons subject to Berry-Mondragon boundary conditions in the presence of weak impurities. Using field--theoretical methods, we calculate the density of charge carriers (and, thus, the quantum capacitance) as well as th
Externí odkaz:
http://arxiv.org/abs/1311.0254
Publikováno v:
JHEP 04 (2013) 068
We analyze the finite temperature behaviour of massless conformally coupled scalar fields in homogeneous lens spaces $S^3/{\mathbb Z}_p$. High and low temperature expansions are explicitly computed and the behavior of thermodynamic quantities under t
Externí odkaz:
http://arxiv.org/abs/1212.6220
We examine the local super trace asymptotics for the de Rham complex defined by an arbitrary super connection on the exterior algebra. We show, in contrast to the situation in which the connection in question is the Levi-Civita connection, that these
Externí odkaz:
http://arxiv.org/abs/1201.6301
Autor:
Beneventano, C. G., Santangelo, E. M.
We study a family of local boundary conditions for the Dirac problem corresponding to the continuum limit of graphene, both for nanoribbons and nanodots. We show that, among the members of such family, MIT bag boundary conditions are the ones which a
Externí odkaz:
http://arxiv.org/abs/1011.2772