We perform a systematic comparison between photoelectron momentum distributions computed with the rescattered quantum-orbit strong-field approximation (RQSFA) and Coulomb (CQSFA). exclude direct, hybrid, multiply scattered CQSFA trajectories focus on contributions of that undergo single act rescattering. For this orbit subset, one may establish one-to-one correspondence RQSFA for backscattered forward-scattered trajectory pairs. assess influence potential ionization rescattering times...

We investigate the phase-space dynamics of Kramers-Henneberger (KH) atom solving time-dependent Schrödinger equation for reduced-dimensionality models and using Wigner quasiprobability distributions. find that, time-averaged KH potential, coherent superpositions eigenstates perform a cyclic motion confined in momentum space, whose frequency is proportional to energy difference between two eigenstates. This also present if full are taken into consideration. However, there time delays...

We construct two strong-field path integral methods with full Coulomb distortion, in which the quantum pathways are mimicked by interfering electron orbits: rate-based CQSFA (R-CQSFA) and hybrid forward-boundary (H-CQSFA). The have same starting point as standard quantum-orbit approximation (CQSFA), but their implementation does not require preknowledge of orbits' dynamics. These applied to ultrafast photoelectron holography. In method, orbits forward propagated we derive a nonadiabatic...

Attosecond science has opened up new frontiers in our understanding of processes happening on the intrinsic timescale electrons. The ability to manipulate and observe phenomena at attosecond level yielded groundbreaking insights into such as electron dynamics behavior matter under extreme conditions. This interdisciplinary field bridges various research areas quantum optics, chemistry information facilitating a cohesive understanding. However, despite many emerging successful applications,...

We study Faraday rotation in the quantum relativistic limit. Starting from photon self-energy presence of a constant magnetic field polarization vector plane electromagnetic wave which travel along fermion-antifermion gas is studied. The connection between effect and Hall (QHE) discussed. also investigated for massless (2+1)-dimensional fermion system derived by using compactification dimension parallel to field. angle shows quantized behavior as conductivity two three dimensions.

We discuss the effect of using potentials with a Coulomb tail and different degrees softening in photoelectron momentum distributions (PMDs) recently implemented hybrid forward-boundary CQSFA (H-CQSFA). show that introducing interaction influences ridges observed PMDs associated backscattered electron trajectories. In limit hard-core interaction, re-scattering close along polarization axis, while for soft-core potential, they are interrupted at ridge-specific angles. analyze mapping orbits...

We discuss the effect of using potentials with a Coulomb tail and different degrees softening in photoelectron momentum distributions (PMDs) recently implemented hybrid forward-boundary CQSFA (H-CQSFA). show that introducing interaction influences ridges observed PMDs associated backscattered electron trajectories. In limit hard-core interaction, rescattering close along polarization axis, while for soft-core potential, they are interrupted at ridge-specific angles. analyze mapping orbits...

We investigate the phase-space dynamics of Kramers Henneberger (KH) atom solving time-dependent Schr\"odinger equation for reduced-dimensionality models and using Wigner quasiprobability distributions. find that, time-averaged KH potential, coherent superpositions eigenstates perform a cyclic motion confined in momentum space, whose frequency is proportional to energy difference between two eigenstates. This also present if full time dependent are taken into consideration. However, there...

Abstract The aim of this work is to study Faraday rotation in the quantum relativistic limit. Starting from photon self‐energy presence a constant magnetic field polarization vector plane electromagnetic wave which travels along fermion‐antifermion gas studied. connection between Effect and Quantum Hall (QHE) discussed. angle shows resonant behavior related with branching points conductivity. Possible applications magnetospheres compact objects are (© 2014 WILEY‐VCH Verlag GmbH & Co....

The protein p53 has a well established role in protecting genomic integrity human cells. When DNA is damaged induces the cell cycle arrest to prevent transmission of damage progeny, triggers production proteins for repair and if can not be repaired p53-mediated apoptotic pathway ultimately activated. p53-Mdm2 feedback loop seems key circuit this response cells damage. Measurements individual have shown that its regulator Mdm2 develop sustained oscillations over long periods time, even...

Abstract The aim of this work is to solve the dispersion relations near first excitation threshold a photon propagating along magnetic field in strong limit. We have calculated time damping two particular cases: degenerate gas as well diluted limit, both being important from astro‐physical point view. In particular, limit could describe magnetosphere neutron stars. solutions been used obtain finite quantum Faraday angle limits. A resonant behavior for also obtained. To reproduce...

Abstract We study the transverse propagation of photons in a magnetized vacuum considering radiative corrections one‐loop approximation. The dispersion equation is modified due to photon self‐energy transparency region (0 < ω 2 m e ). aim our explore neutron star magnetosphere (described by vacuum). solution obtained terms analytic functions. larger magnetic field, higher phase velocity and more curve deviates from light‐cone. For fixed values frequency, we dependence time delay with...

The aim of this work is to solve the dispersion relations near first excitation threshold photon propagating along magnetic field in strong limit. We have calculated time damping two particular cases: degenerate gas as well diluted limit being both important from Astrophysical point view. In could describe magnethosphere neutron stars. solutions been used obtain a finite Quantum Faraday angle limits. A resonant behavior for also obtained. To reproduce semi-classical result rotation weak considered.

Abstract We perform quantum trajectory simulations of the decay dynamics initially localized resonant states. Quantum is represented by a swarm interacting trajectories which maps originally problem into motion an equivalent (higher-dimensional) classical system. address two model problems, in initial resonance leads to either spatially confined or asymptotically free wave-packet dynamics, specifically on double well potential and plain. The traditional choice fixed boundary conditions...

We construct two strong-field path integral methods with full Coulomb distortion, in which the quantum pathways are mimicked by interfering electron orbits: rate-based CQSFA (R-CQSFA) and hybrid forward-boundary (H-CQSFA). The have same starting point as standard quantum-orbit approximation (CQSFA), but their implementation does not require pre-knowledge of orbits' dynamics. These applied to ultrafast photoelectron holography. In method, orbits forward propagated we derive a non-adiabatic...

We perform a systematic comparison between photoelectron momentum distributions computed with the rescattered-quantum orbit strong-field approximation (RQSFA) and Coulomb-quantum (CQSFA). exclude direct, hybrid, multiple scattered CQSFA trajectories, focus on contributions of trajectories that undergo single act rescattering. For this subset, one may establish one-to-one correspondence RQSFA for backscattered forward-scattered trajectory pairs. assess influence Coulomb potential ionization...

The protein p53 has a well established role in protecting genomic integrity human cells. When DNA is damaged induces the cell cycle arrest to prevent transmission of damage progeny, triggers production proteins for repair and ultimately calls apoptosis. In particular, p53-Mdm2 feedback loop seems be key circuit this response cells damage. For many years, based on measurements over populations it was believed that responsible existence damped oscillations levels Mdm2 after However, recent...