Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Cabrera, Renan"'
Autor:
Campos, Andre G., Cabrera, Renan
Publikováno v:
Phys. Rev. Research 2, 013051 (2020)
This paper presents new analytic solutions to the Dirac equation employing a recently introduced method that is based on the formulation of spinorial fields and their driving electromagnetic fields in terms of geometric algebras. A first family of so
Externí odkaz:
http://arxiv.org/abs/1911.00333
Publikováno v:
Eur. Phys. J. Special Topics, 1-13, 2019
The formalism of Operational Dynamical Modeling [Phys. Rev. Lett. {\bf 109}, 190403 (2012)] is employed to analyze dynamics of spin half relativistic particles. We arrive at the Dirac equation from specially constructed relativistic Ehrenfest theorem
Externí odkaz:
http://arxiv.org/abs/1805.08243
Publikováno v:
Phys. Rev. Lett. 119, 173203 (2017)
A simple framework for Dirac spinors is developed that parametrizes admissible quantum dynamics and also analytically constructs electromagnetic fields, obeying Maxwell's equations, which yield a desired evolution. In particular, we show how to achie
Externí odkaz:
http://arxiv.org/abs/1705.02001
Publikováno v:
Phys. Rev. Lett. 118, 083201 (2017)
We show that a laser pulse can always be found that induces a desired optical response from an arbitrary dynamical system. As illustrations, driving fields are computed to induce the same optical response from a variety of distinct systems (open and
Externí odkaz:
http://arxiv.org/abs/1611.02699
Autor:
Vuglar, Shanon L., Zhdanov, Dmitry V., Cabrera, Renan, Seideman, Tamar, Jarzynski, Christopher, Bondar, Denys I.
Publikováno v:
Phys. Rev. Lett. 120, 230404 (2018)
A systematic approach is given for engineering dissipative environments that steer quantum wavepackets along desired trajectories. The methodology is demonstrated with several illustrative examples: environment-assisted tunneling, trapping, effective
Externí odkaz:
http://arxiv.org/abs/1611.02736
Publikováno v:
Phys. Rev. E 93, 063304 (2016)
The Gibbs canonical state, as a maximum entropy density matrix, represents a quantum system in equilibrium with a thermostat. This state plays an essential role in thermodynamics and serves as the initial condition for nonequilibrium dynamical simula
Externí odkaz:
http://arxiv.org/abs/1602.07288
The fraction of positrons and electrons in cosmic rays recently observed on the International Space Station unveiled an unexpected excess of the positrons, undermining the current foundations of cosmic rays sources. We provide a quantum electrodynami
Externí odkaz:
http://arxiv.org/abs/1502.03025
Publikováno v:
J. Phys. Chem. Lett., 7, 1632-1637 (2016)
Dissipative forces are ubiquitous and thus constitute an essential part of realistic physical theories. However, quantization of dissipation has remained an open challenge for nearly a century. We construct a quantum counterpart of classical friction
Externí odkaz:
http://arxiv.org/abs/1412.1892
Publikováno v:
Phys. Rev. A 94, 052111 (2016)
We present an open system interaction formalism for the Dirac equation. Overcoming a complexity bottleneck of alternative formulations, our framework enables efficient numerical simulations (utilizing a typical desktop) of relativistic dynamics withi
Externí odkaz:
http://arxiv.org/abs/1409.1247
Publikováno v:
Physical Review A 90 034102 2014
In nonrelativistic quantum mechanics, Hudsons theorem states that a Gaussian wavefunction is the only pure state corresponding to a positive Wigner function (WF). We explicitly construct non Gaussian Dirac spinors with positive relativistic WF. These
Externí odkaz:
http://arxiv.org/abs/1402.1768