On the ratio of lapses in bimetric relativity

• The two lapse functions in the Hassan–Rosen bimetric theory are not independent. Without knowing the relation between them, one cannot evolve the equations in the 3+1 formalism. This work computes the ratio of lapses for the spherically symmetric case, which is a prerequisite for numerical bimetric relativity.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Keyword

modified gravity

bimetric relativity

ghost-free bimetric theory

teoretisk fysik

Theoretical Physics

Publication and Content Type

ref (subject category)

art (subject category)