Studying a relativistic field theory at finite chemical potential with the density matrix renormalization group

Understand

The density matrix renormalization group is applied to a relativistic complex scalar field at finite chemical potential.

• The two-point function and various bulk quantities are studied.
• It is seen that bulk quantities do not change with the chemical potential until it is larger than the minimum excitation energy.
• The technical limitations of the density matrix renormalization group for treating bosons in relativistic field theories are discussed.