412 citations · 5.3k across the 253 of their papers we have counts for
17 papers · 1 filter
Kerr-Newman and Electromagnetic acceleration
Paul H. Frampton
Previous discussions of charged dark matter neglected PBH spin and employed the Reissner-Nordstrom metric. In Nature we expect the PBHs to possess spin which require use of the tec…
Holographic Principle, Cosmological Constant and Cyclic Cosmology
Claudio Corianò, Paul H. Frampton
The holographic principle provides a deep insight into quantum gravity and resolves the fine-tuning crisis concerning the cosmological constant. Holographic dark energy introduces…
Cyclic Cosmology and Holographic Entanglement Entropy
P. H. Frampton
No abstract prepared.
Maximum PBH Mass and Primordiality
P. H. Frampton
In order to avoid unacceptable -distortions inconsistent with observational data on the Cosmic Microwave Background, Primordial Black Holes (PBHs) must be less massive than $10^…
Holographic Entanglement Entropy in Cyclic Cosmology
Paul H. Frampton
We discuss a cyclic cosmology in which the visible universe, or introverse, is all that is accessible to an observer while the extroverse represents the total spacetime originating…
Cyclic Period in the CBE Model
Paul H Frampton
In a cyclic entropy model in which the extroverse is jettisoned at turnaround with a Come Back Empty (CBE) assumption, we address matching of the contaction scale factor $\hat{a}(t…
Angular Momentum of Dark Matter Black Holes
Paul H. Frampton
The putative black holes which may constitute all the dark matter are described by a Kerr metric with only two parameters, mass M and angular momentum J. There has been little disc…
A new direction for dark matter research: intermediate mass compact halo objects
G. Chapline, P. H. Frampton
The failure to find evidence for elementary particles that could serve as the constituents of dark matter brings to mind suggestions that dark matter might consist of massive compa…
The Primordial Black Hole Mass Range
Paul H. Frampton
We investigate Primoridal Black Hole (PBH) formation by which we mean black holes produced in the early universe during radiation domination. After discussing the range of PBH mass…
Scale Invariant Density Perturbations from Cyclic Cosmology
Paul Howard Frampton
It is shown how quantum fluctuations of the radiation during the contraction era of a CBE (Comes Back Empty) cyclic cosmology can provide density fluctuations which re-enter the ho…
Possible Duality of CBE and Penrose CCC Cyclic Cosmologies
Paul H. Frampton
In a cyclic entropy model in which the extroverse is jettisoned at turnaround with a Come Back Empty assumption, we address matching of the contraction scale factor to…
Cyclic Entropy: An Alternative to Inflationary Cosmology
Paul Howard Frampton
We address how to construct an infinitely cyclic universe model. A major consideration is to make the entropy cyclic which requires the entropy to be reset to zero in each cycle ex…
Bang or Bounce
Paul H. Frampton
Following up an earlier suggestion of how the Tolman Entropy Conundrum (TEC) can be solved in a cyclic cosmology using the Come Back Empty (CBE) assumption with phantom dark energy…
High Longevity Microlensing Events and Dark Matter Black Holes
Paul H. Frampton
Gravitational microlensing has been employed to identify massive halo objects by their amplification of distant sources; MACHO searches have studied event times $2 h \lesssim t_0 \…
Upper and Lower Bounds on Gravitational Entropy
Paul H. Frampton, Thomas W. Kephart
The entropy in the interior of the Universe has many contributions including well understood ones from radiation and relic neutrinos. The gravitational entropy is larger and more s…
Comment on ``Can Black Holes be Torn Up by a Phantom in Cyclic Cosmology?" by X. Zhang. arXiv:0708.1408 [gr-qc]
Paul Frampton
In a recently archived paper by Zhang\cite{Zhang}, it is claimed that before turnaround in a cyclic model two unexpected events happen: (1) black holes cease to contract and begin…
Massive Superstrings are Black Holes
Paul H. Frampton, Thomas W. Kephart
We argue that it is inconsistent to ignore the gravitational backreaction for on-shell superstring states at the Planck mass and beyond, and that these quantum states become Kerr b…