Zobrazeno 1 - 10
of 522
pro vyhledávání: '"Yabana, K."'
Autor:
Pemmaraju, C. D., Vila, F. D., Kas, J. J., Sato, S. A., Rehr, J., Yabana, K., Prendergast, David
The interaction of laser fields with solid-state systems can be modeled efficiently within the velocity-gauge formalism of real-time time dependent density functional theory (RT-TDDFT). In this article, we discuss the implementation of the velocity-g
Externí odkaz:
http://arxiv.org/abs/1710.08573
We report a Keldysh-like model for the electron transition rate in dielectrics under an intense circularly polarized laser. We assume a parabolic two-band system and the Houston function as the time-dependent wave function of the valence and conducti
Externí odkaz:
http://arxiv.org/abs/1612.06555
Publikováno v:
Phys. Rev. B 93, 045124 (2016)
We theoretically investigate the dynamical Franz-Keldysh effect in femtosecond time resolution, that is, the time-dependent modulation of a dielectric function at around the band gap under an irradiation of an intense laser field. We develop a pump-p
Externí odkaz:
http://arxiv.org/abs/1504.01458
Publikováno v:
Phys. Rev. B 92, 205413 (2015)
We calculate the energy deposition by very short laser pulses in SiO_2 (alpha-quartz) with a view to establishing systematics for predicting damage and nanoparticle production. The theoretical framework is time-dependent density functional theory, im
Externí odkaz:
http://arxiv.org/abs/1412.1445
Publikováno v:
Phys. Rev. B 90, 174303 (2014)
We calculate the dielectric response of excited crystalline silicon in electron thermal equilibrium by adiabatic time-dependent density functional theory (TDDFT) to model the response to irradiation by high-intensity laser pulses. The real part of th
Externí odkaz:
http://arxiv.org/abs/1407.5763
Using imaginary-time theory, it is shown that the triple-alpha reaction rate can be reliably calculated without the need to solve scattering problems involving three charged particles. The calculated reaction rate is found to agree well with the empi
Externí odkaz:
http://arxiv.org/abs/1401.4390
We report an investigation of the structure of $^{12}$C nucleus employing a newly developed configuration-mixing method. In the three-dimensional coordinate-space representation, we generate a number of Slater determinants with various correlated str
Externí odkaz:
http://arxiv.org/abs/1304.5927
Publikováno v:
Phys. Rev. B 89, 064304 (2014)
We calculate the dielectric response of crystalline silicon following irradiation by a high-intensity laser pulse, modeling the dynamics by time-dependent density functional theory (TDDFT). The pump-probe measurements are numerically simulated by sol
Externí odkaz:
http://arxiv.org/abs/1303.3249
Publikováno v:
AIP Conf. Proc. 1491, 222 (2012)
Large-scale calculation based on the multi-configuration Skyrme density functional theory is performed for the light N=Z even-even nucleus, 12C. Stochastic procedures and the imaginary-time evolution are utilized to prepare many Slater determinants.
Externí odkaz:
http://arxiv.org/abs/1209.4973
The time-dependent density functional theory (TDDFT) is the leading computationally feasible theory to treat excitations by strong electromagnetic fields. Here the theory is applied to coherent optical phonon generation produced by intense laser puls
Externí odkaz:
http://arxiv.org/abs/1205.6241