Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Franco, D. H. T."'
This paper is devoted to the study of the spectral properties of the Weyl-Dirac or massless Dirac operators, describing the behavior of quantum quasi-particles in dimension 2 in a homogeneous magnetic field, $B^{\rm ext}$, perturbed by a chiral-magne
Externí odkaz:
http://arxiv.org/abs/2211.06765
Publikováno v:
Physics Letters B 835 (2022) 137544
The ultraviolet and infrared finiteness of a parity-even massless planar quantum electrodynamics mimics the scale invariance in graphene.
Comment: In honor of the 80th birthday of Prof. Olivier Piguet, 7 pages
Comment: In honor of the 80th birthday of Prof. Olivier Piguet, 7 pages
Externí odkaz:
http://arxiv.org/abs/2209.10611
Publikováno v:
Few-Body Systems 63, 61 (2022)
We address the question of the existence of bound states for a suitably projected two-dimensional massless Dirac operator in the presence of a Bessel-Macdonald potential (also known as $K_0$-potential potential), raised by De Lima, Del Cima and Miran
Externí odkaz:
http://arxiv.org/abs/2209.04559
Publikováno v:
EPL 136 (2021) 30004
Magnetic monopoles have been a subject of study for more than a century since the first ideas by A. Vaschy and P. Curie, circa 1890. In 1974, Y. Nambu proposed a model for magnetic monopoles exploring a parallelism between the broken symmetry Higgs a
Externí odkaz:
http://arxiv.org/abs/2104.03286
Publikováno v:
Int. J. Theor. Phys. 60 (2021) 3063-3075
Quantum parity conservation is verified at all orders in perturbation theory for a massless parity-even $U(1)\times U(1)$ planar quantum electrodynamics (QED$_3$) model. The presence of two massless fermions requires the Lowenstein-Zimmermann (LZ) su
Externí odkaz:
http://arxiv.org/abs/2010.03125
The Brown-Ravenhall operator was initially proposed as an alternative to describe the fermion-fermion interaction via Coulomb potential and subject to relativity. This operator is defined in terms of the associated Dirac operator and the projection o
Externí odkaz:
http://arxiv.org/abs/2005.08143
Publikováno v:
Annals of Physics 427 (2021) 168385
We analyze the Schr\"odinger operator in two-dimensions with an attractive potential given by a Bessel-Macdonald function. This operator is derived in the non-relativistic approximation of planar quantum electrodynamics (${\rm QED}_3$) models as a fr
Externí odkaz:
http://arxiv.org/abs/1810.02008
The measure of quantum entanglement is determined for any dimer, either ferromagnetic or antiferromagnetic, spin-1/2 Heisenberg systems in the presence of external magnetic field. The physical quantity proposed as a measure of thermal quantum entangl
Externí odkaz:
http://arxiv.org/abs/1803.01241
Publikováno v:
JHEP11(2017)011
The issue intensively claimed in the literature on the generation of a CPT-odd and Lorentz violating Chern-Simons-like term by radiative corrections owing to a CPT violating interaction -- the axial coupling of fermions with a constant vector field $
Externí odkaz:
http://arxiv.org/abs/1709.09756
The quantum entanglement measure is determined, for the first time, for antiferromagnetic trimer spin-1/2 Heisenberg chains. The physical quantity proposed to measure the entanglement is the distance between states by adopting the Hilbert-Schmidt nor
Externí odkaz:
http://arxiv.org/abs/1502.07000