827 citations · 16k across the 208 of their papers we have counts for
211 papers
On the Question Why There Exists Something Rather Than Nothing
Roderich Tumulka
In my opinion, nothing useful has ever been written on the question in the title, and small is the contribution that I have to offer. I outline an explanation for why there is some…
Big Bang Nucleosynthesis constraints on Barrow entropy
John D. Barrow, Spyros Basilakos, Emmanuel N. Saridakis
We use Big Bang Nucleosynthesis (BBN) data in order to impose constraints on the exponent of Barrow entropy. The latter is an extended entropy relation arising from the incorporati…
Screening anisotropy via energy-momentum squared gravity: CDM model with hidden anisotropy
Ozgur Akarsu, John D. Barrow, N. Merve Uzun
We construct a generalization of the standard CDM model, wherein we simultaneously replace the spatially flat Robertson-Walker metric with its simplest anisotropic generalizatio…
The Generic Sudden Singularity in Brans-Dicke Theory
John D. Barrow, Spiros Cotsakis, Dimitrios Trachilis
We construct a formal asymptotic series expansion for a general solution of the Brans-Dicke equations with a fluid source near a sudden singularity. This solution contains eleven i…
Measuring the fine structure constant on a white dwarf surface; a detailed analysis of Fe V absorption in G191-B2B
J. Hu, J. K. Webb, T. R. Ayres +12
The gravitational potential phi = GM/Rc^2 at the surface of the white dwarf G191-B2B is 10,000 times stronger than that at the Earth's surface. Numerous photospheric absorption fea…
Is the universe ill-posed?
John D. Barrow
We discuss an unusual consequence of the behaviour of general relativistic cosmological models when they initial value problem is not well-posed because of the lack of the local Li…