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5 papers · 2 filters
Q-balls with scalar charges
V. Rubakov, A. Levin
We consider Friedberg-Lee-Sirlin Q-balls in a (3+1)-dimensional model with vanishing scalar potential of one of the fields. The Q-ball is stabilized by the gradient energy of this…
Models of non-relativistic quantum gravity: the good, the bad and the healthy
Diego Blas, Oriol Pujolas, Sergey Sibiryakov
Horava's proposal for non-relativistic quantum gravity introduces a preferred time foliation of space-time which violates the local Lorentz invariance. The foliation is encoded in…
Scalar tilt from broken conformal invariance
V. Rubakov, M. Osipov
Within recently proposed scenario which explains flatness of the spectrum of scalar cosmological perturbations by a combination of conformal and global symmetries, we discuss the e…
Cosmological density perturbations from conformal scalar field: infrared properties and statistical anisotropy
M. Libanov, V. Rubakov
We consider a scenario in which primordial scalar perturbations are generated when complex conformal scalar field rolls down its negative quartic potential. Initially, these are th…
Riemann - terms in perturbative QED series, conformal symmetry and the analogies with structures of multiloop effects in N=4 supersymmetric Yang-Mills theory
A. L. Kataev
As was discovered recently, 5-loop perturbative quenched QED approximation to the QED -function consist from the rational term and the term proportional to -function. It i…