378 citations
- Institució Catalana de Recerca i Estudis AvançatsES24 papers
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10 papers · 1 filter
An Inverse Kinematic Problem with Internal Sources
Leonid Pestov, Gunther Uhlmann, Hanming Zhou
Given a bounded domain in with a conformally Euclidean metric , in this paper we consider the inverse problem of recovering a semigeodesic neighborhoo…
CDM coupled to radiation. Dark energy and Universe acceleration
Renat R. Abbyazov, Sergey V. Chervon, Volker Müller
Recently the Chiral Cosmological Model (CCM) coupled to cold dark matter (CDM) has been investigated as CDM model to study the observed accelerated expansion of the Universe. Da…
Extreme neutron stars from Extended Theories of Gravity
Artyom V. Astashenok, Salvatore Capozziello, Sergei D. Odintsov
We discuss neutron stars with strong magnetic mean fields in the framework of Extended Theories of Gravity. In particular, we take into account models derived from and $f(\c…
The KdV in Cosmology: a useful tool or a distraction?
A. V. Yaparova, A. V. Yurov, V. A. Yurov
The letter is a response to the recent article by J. Lidsey. We demonstrate that the Schwarzian derivative technique developed therein is but a consequence of linearizabiliy of the…
An Emergent Universe supported by chiral cosmological fields in Einstein--Gauss--Bonnet gravity
Sergey V. Chervon, Sunil D. Maharaj, Aroonkumar Beesham ans Aleksandr Kubasov
We propose the application of the chiral cosmological model (CCM) for the Einstein--Gauss--Bonnet (EGB) theory of gravitation with the aim of finding new models of the Emergent Uni…
Magnetic Neutron Stars in f(R) gravity
Artyom V. Astashenok, Salvatore Capozziello, Sergei D. Odintsov
Neutron stars with strong magnetic fields are considered in the framework of f(R) gravity. In order to describe dense matter in magnetic field, the model with baryon octet interact…