# PILE

References: Ceriotti2010

Controls the PI Langevin Equation thermostat. Needs the exact harmonic integrator. May lead to unphysical motions if constraint e.g. FIXED_ATOMS, is applied. RESTART_HELIUM section has to be .FALSE. when restarting the PIGLET job. [Edit on GitHub]

Subsections

- RNG_INIT

## Keywords

- LAMBDA

- TAU

- THERMOSTAT_ENERGY

## Keyword descriptions

LAMBDA: real = 5.00000000E-001

  Usage: LAMBDA {real}

  Scaling of friction to mode coupling [Edit on GitHub]

TAU: real = 2.41888433E+001 [fs]

  Usage: TAU {real}

  Time constant for centroid motion. If zero or negative the centroid is not thermostated. [Edit on GitHub]

THERMOSTAT_ENERGY: real = 0.00000000E+000

  Usage: THERMOSTAT_ENERGY {real}

  Thermostat energy for conserved quantity. Only useful in restart files. [Edit on GitHub]