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Error message

Deprecated function: The each() function is deprecated. This message will be suppressed on further calls in node_privacy_byrole_nodeapi_prepare() (line 216 of /var/www/exc/sites/all/modules/node_privacy_byrole/node_privacy_byrole.module).
  • Libraries
    • Compulsory

      In order to compile EXC (in any Unix-like machine), you need to provide it with some external linear algebra libraries, like LAPACK+BLAS, or ATLAS, MKL, etc. (

    • Recommended

      EXC also needs to perform Fourier transformations. This is accomplished by the provided Goedecker-FFT. However, the use of the (free) FFTW3 package is highly recommended. (

  • Propaedeutics
    • Ground state file

      Abinit kss output file; interface with the CP (developed by Lucia and Giovanni) qplda output file is provided as well.

    • Screening and gw corrections (if necessary)

      Abinit scr,gw output file or GW (developed by Rex Godby, Lucia, Giovanni and Valerio) em1,gw file.

Version 3.2 available

The new version of EXC is available. In particular the finite momentum transfer has been implemented.

New Release: v3.1

A new version of the code has been released: v3.1. Few changes and some bug corrections for this intermediate release.

New Release v3.0

A new version of the code has been released: v3.0.

Theoretical Spectroscopy Lectures

Electronic excitations are probed by experimental techniques such as optical absorption, EELS and photo-emission (direct or inverse).

Cecam School on Theoretical Spectroscopy

Theoretical Spectroscopy Lectures: Theory and Codes