56,322 research outputs found
Role expectation process in building a desirable work culture
Includes bibliographical references
Infrared regulators and SCETII
We consider matching from SCETI, which includes ultrasoft and collinear
particles, onto SCETII with soft and collinear particles at one loop. Keeping
the external fermions off their mass shell does not regulate all IR divergences
in both theories. We give a new prescription to regulate infrared divergences
in SCET. Using this regulator, we show that soft and collinear modes in SCETII
are sufficient to reproduce all the infrared divergences of SCETI. We explain
the relationship between IR regulators and an additional mode proposed for
SCETII.Comment: 9 pages. Added discussion about relationship between IR regulators
and messenger mode
QPROP: A Schroedinger-solver for intense laser-atom interaction
The Qprop package is presented. Qprop has been developed to study laser-atom
interaction in the nonperturbative regime where nonlinear phenomena such as
above-threshold ionization, high order harmonic generation, and dynamic
stabilization are known to occur. In the nonrelativistic regime and within the
single active electron approximation, these phenomena can be studied with Qprop
in the most rigorous way by solving the time-dependent Schr\"odinger equation
in three spatial dimensions. Because Qprop is optimized for the study of
quantum systems that are spherically symmetric in their initial, unperturbed
configuration, all wavefunctions are expanded in spherical harmonics.
Time-propagation of the wavefunctions is performed using a split-operator
approach. Photoelectron spectra are calculated employing a window-operator
technique. Besides the solution of the time-dependent Schr\"odinger equation in
single active electron approximation, Qprop allows to study many-electron
systems via the solution of the time-dependent Kohn-Sham equations.Comment: 40 pages, LaTeX; to obtain the QPROP source code visit
http://www.qprop.de, accepted for publication in Computer Physics
Communication
Recommended from our members
Aristelliger georgeensis
Number of Pages: 2Integrative BiologyGeological Science
Recommended from our members
Aristelliger barbouri
Number of Pages: 1Integrative BiologyGeological Science
Recommended from our members
Aristelliger
Number of Pages: 4Integrative BiologyGeological Science
Recommended from our members
Thecadactylus, T. rapicauda
Number of Pages: 16Integrative BiologyGeological Science
Recommended from our members
Anolis garmani
Number of Pages: 3Integrative BiologyGeological Science
Finite temperature crossovers near quantum tricritical points in metals
We present a renormalization group treatment of quantum tricriticality in
metals. Applying a set of flow equations derived within the functional
renormalization group framework we evaluate the correlation length in the
quantum critical region of the phase diagram, extending into finite
temperatures above the quantum critical or tricritical point. We calculate the
finite temperature phase boundaries and analyze the crossover behavior when the
system is tuned between quantum criticality and quantum tricriticality.Comment: 7 pages, 5 figure
- …