LPM effect
This is a library for the computation of the photon and dilepton
production rates in a Quark-Gluon plasma in thermal equilibrium. More
specifically, it contains functions for solving the integral equations
that resum the Landau-Pomeranchuk-Migdal multiple scattering
contributions.
In order to speed up the calculation, the rates are evaluated by
interpolation from precomputed tables. These tables are binary files,
which have been generated on a PC running Linux. One can reuse them on
any computer with the same byte ordering for the machine
representation of floating point numbers (in particular, this is the
case of Digital Alpha). Otherwise, the tables must be byte-swapped before using them. There is also a program
mktable.c which can be used in order to recreate the
tables. Note that this procedure is very time consuming.
The upper level routines are written in C and use only the functions
present in the standard C library (however, the standalone program
mktable.c requires the Gnu Scientific
Library in order to compile). There is also a wrapper library in
order to call these routines from a program written in Fortran. Two
programs (one in C and one in FORTRAN) are provided in order to
illustrate how these routines should be called from custom code. They
come with makefiles that explain how to compile them and link them.
There are two versions of this library:
