feynlag.vacuum.masses.scalar_mass_matrix

feynlag.vacuum.masses.scalar_mass_matrix(potential, vacuum, fields, tadpole_subs=None)[source]

Mass matrix of real fluctuation fields.

Parameters:

  • potential – scalar potential V in weak-basis components.

  • vacuum – Vacuum.

  • fields – real fluctuation symbols (a CP-even / CP-odd block).

  • tadpole_subs – optional dict from solve_tadpoles().

Returns:

Symmetric M² Matrix.