1,977 research outputs found
Energy transfer from intense laser pulse to dielectrics in time-dependent density functional theory
Energy transfer processes from a high-intensity ultrashort laser pulse to
electrons in simple dielectrics, silicon, diamond, and -quartz are
theoretically investigated by first-principles calculations based on
time-dependent density functional theory (TDDFT). Dependences on frequency as
well as intensity of the laser pulse are examined in detail, making a
comparison with the Keldysh theory. Although the Keldysh theory reliably
reproduces the main features of the TDDFT calculation, we find some deviations
between results by the two theories. The origin of the differences is examined
in detail
Crystalline Spinon Basis for RSOS Models
The crystalline spinon basis for the RSOS models associated with
is studied. This basis gives fermionic type character formulas
for the branching coefficients of the coset . In addition the path description of
the parafermion characters is found as a limit of the spinon description of the
string functions.Comment: 16 pages, latex, no figures, Comments are added in the discussion
section. Some references are adde
- …