39 citations · 70 across the 10 of their papers we have counts for
13 papers
Spin polarization in a chiral ladder: elastic and inelastic environments
D. T. Verrilli H., Jorge Cardenas-Gamboa, Mayra Peralta +4
We study how the transport window and environmental reinjection determine the spin polarization transmitted through a minimal two-leg chiral ladder. The model contains time-reversa…
Zero expansion is not free: the sharp minimum of Eulerian negative energy in Natário warp drives
Nelson Bolívar, Ivaylo Vasilev, Gabriel Abellán
Natário's warp drive replaces the contraction and expansion of the Alcubierre bubble by a divergence-free shift. We determine exactly how much Eulerian negative energy this constru…
Transient Coherence and Multiscale Spectral Structure after a Mass Quench in a 1+1-Dimensional Scalar Field
Gabriel Abellán, Nelson Bolívar
A mass quench generates anomalous pair correlations that are absent from the final particle occupations. For a free real scalar field in dimensions, we define a bilocal obser…
Boundary Obstructions and Lapse Freedom in Static Spherical Hollow Cores
Nelson Bolívar, Gabriel Abellán, Ivaylo Vasilev
We analyze a sharply delimited comparison problem for a static spherical hollow core: an empty, flat cavity surrounded by a positive matter wall. In the unit-lapse, flat-slice radi…
Covariance-Driven Momentum Rectification at Liquid-Vapor Interfaces Near Wetting Transitions
Nelson Bolívar, Gabriel Abellán, Ivaylo Vasilev
Zero-mean forcing can generate directed transport when a medium responds in a spatially structured way and the relevant symmetries are broken. Liquid-vapor interfaces are a useful…
Influence of anisotropic matter on the Alcubierre metric and other related metrics: revisiting the problem of negative energy
G. Abellan, N. Bolivar, I. Vasilev
Negative energy scenarios are the most widely studied for the warp metric. In fact, the prevailing view in the community so far has been that the warp metric necessarily has negati…
Gauge transformations of Spin-Orbit interactions in graphene
Bertrand Berche, Nelson Bolí var, Alexander López +1
Inclusion of spin-dependent interactions in graphene in the vicinity of the Dirac points can be posed in terms of non-Abelian gauge potentials. Such gauge potentials being surrogat…
Persistent charge and spin currents in the long wavelength regime for graphene rings
Nelson Bolivar, Ernesto Medina, Bertrand Berche
We address the problem of persistent charge and spin currents on a Corbino disk built from a graphene sheet. We consistently derive the Hamiltonian including kinetic, intrinsic (IS…
Geometric Representation of Interacting Non-Relativistic Open Strings using Extended Objects
P. J. Arias, N. Bolivar, E. Fuenmayor +1
Non-relativistic charged open strings coupled with Abelian gauge fields are quantized in a geometric representation that generalizes the Loop Representation. The model consists of…
Gauge field theory approach to spin transport in a 2D electron gas
B. Berche, N. Bolivar, A. Lopez +1
We discuss the Pauli Hamiltonian including the spin-orbit interaction within an U(1) x SU(2) gauge theory interpretation, where the gauge symmetry appears to be broken. This interp…
Perfect spin filtering device through a Mach Zehnder interferometer in GaAs/AlGaAs electron gas
Alexander López, Ernesto Medina, Nelson Bolívar +1
Spin filtering through quantum spin interference is addressed exactly, in two dimensions, in a medium that has both Rashba and Dresselhaus spin-orbit couplings and an applied exter…
The Dynamical Behaviour of Test Particles in a Quasi-Spherical Spacetime and the Physical Meaning of Superenergy
L. Herrera, J. Carot, N. Bolivar +1
We calculate the instantaneous proper radial acceleration of test particles (as measured by a locally defined Lorentzian observer) in a Weyl spacetime, close to the horizon. As exp…
Quantization of Interacting Non-Relativistic Open Strings using Extended Objects
P. J. Arias, N. Bolívar, E. Fuenmayor +1
Non-relativistic charged open strings coupled with Abelian gauge fields are quantized in a geometric representation that generalizes the Loop Representation. The model comprises op…