59 citations · 475 across the 32 of their papers we have counts for
31 papers
Perturbative versus Non-Perturbative Renormalization
S. Hariharakrishnan, U. D. Jentschura, I. G. Marian +2
Approximated functional renormalization group (FRG) equations lead to regulator-dependent -functions, in analogy to the scheme-dependence of the perturbative renormalization gro…
Time Evolution and Thermal Renormalization Group Flow in Cosmology
Istvan Gabor Marian, Andrea Trombettoni, Istvan Nandori
Time-evolution of the Universe as described by the Friedmann equation can be coupled to equations of motion of matter fields. Quantum effects may be incorporated to improve these c…
Renormalisation of non-differentiable potentials
J. Alexandre, N. Defenu, G. Grigolia +5
Non-differentiable potentials, such as the V-shaped (linear) potential, appear in various areas of physics. For example, the effective action for branons in the framework of the br…
Theory of superlocalized magnetic nanoparticle hyperthermia: rotating versus oscillating fields
Zs. Iszaly, I. G. Marian, I. A. Szabo +2
The main idea of magnetic hyperthermia is to increase locally the temperature of the human body by means of injected superparamagnetic nanoparticles. They absorb energy from a time…
Vacuum Energy and Renormalization of the Field-Independent Term
I. G. Marian, U. D. Jentschura, N. Defenu +2
Due to its construction, the nonperturbative renormalization group (RG) evolution of the constant, field-independent term (which is constant with respect to field variations but de…
Renormalization-Group Running Induced Cosmic Inflation
I. G. Marian, N. Defenu, U. D. Jentschura +2
As a contribution to a viable candidate for a standard model of cosmology, we here show that pre-inflationary quantum fluctuations can provide a scenario for the long-sought initia…