We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK


97% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Newton's constant in f(R,R_{μν}R^{μν},\Box R) t...
View graph of relations

« Back

Newton's constant in f(R,R_{μν}R^{μν},\Box R) theories of gravity and constraints from BBN

Research output: Contribution to journalJournal article


Article number104006
<mark>Journal publication date</mark>6/05/2009
<mark>Journal</mark>Physical Review D – Particles and Fields
Number of pages7
<mark>Original language</mark>English


We consider corrections to the Einstein-Hilbert action which contain both higher order and nonlocal terms. We derive an effective Newtonian gravitational constant applicable at the weak field limit and use the primordial nucleosynthesis (BBN) bound and the local gravity constraints on $G_{eff}$ in order to test the viability of several cases of our general Lagrangian. We will also provide a BBN constrain on the $\Box R$ gravitational correction.

Bibliographic note

© 2009 The American Physical Society v1: 6 pages, 3 figures v2: Corrected minor error in Sec. IV (conclusions unaffected), references added v3: Changes match published version in PRD