Thermodynamics of the BPS Skyrme model

Understand

One problem in the application of the Skyrme model to nuclear physics is that it predicts too large a value for the compression modulus of nuclear matter.

• Here we investigate the thermodynamics of the BPS Skyrme model at zero temperature and calculate its equation of state.
• Among other results, we find that classically (i.e.
• without taking into account quantum corrections) the compressibility of BPS skyrmions is, in fact, infinite, corresponding to a zero compression modulus.