Mediaspace scheduled maintenance: Aug 25, 2026 07:00 - 12:00 AM. During this time, videos will be temporarily unavailable. Check status updates.

Home

Person

Igor Tkachev

This person has left EPFL

About
Privacy
Disclaimer

Graph Chatbot

Related publications (5)

Page 1 of 1

Quantum scale invariance on the lattice

Mikhail Chapochnikov, Igor Tkachev

We propose a scheme leading to a non-perturbative definition of lattice field theories which are scale-invariant on the quantum level. A key idea of the construction is the replacement of the lattice spacing by a propagating dynamical field - the dilaton. ...

2009

A White Paper on keV sterile neutrino Dark Matter

Antoine Pierre Emmanuel Alexis Merle, Julien Lesgourgues, Alexey Boyarsky, Oleg Ruchayskiy, Igor Tkachev, Marco Drewes, Laurent Gastaldo

We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting views and insights from all disciplines involved - cosmology, astrophysics, nuclear, and particle physics - in each case viewed from both theoretical and experimental/o ...

Iop Publishing Ltd2017

The nuMSM, inflation, and dark matter

Mikhail Chapochnikov, Igor Tkachev

We show how to enlarge the νMSM (the minimal extension of the Standard Model by three right-handed neutrinos) to incorporate inflation and provide a common source for electroweak symmetry breaking and for right-handed neutrino masses. In addition to inflat ...

2006

Universal Properties of Dark Matter Halos

Alexey Boyarsky, Oleg Ruchayskiy, Igor Tkachev

We discuss the universal relation between density and size of observed dark matter halos that was recently shown to hold on a wide range of scales, from dwarf galaxies to galaxy clusters. Predictions of cold dark matter (Lambda CDM) N-body simulations are ...

2010

How to find a dark matter sterile neutrino?

Mikhail Chapochnikov, Alexey Boyarsky, Oleg Ruchayskiy, Igor Tkachev

We propose a strategy for how to look for dark matter particles possessing a radiative decay channel and derive constraints on their parameters from observations of x rays from our own Galaxy and its dwarf satellites. When applied to sterile neutrinos in t ...

2006