Dr. Alexey Boyarsky

Affiliation
Leiden University
Position
Assistant professor

Google Scholar profile ScienceWISE profile

Research

The nuMSM


The Neutrino Minimal Standard Model (nuMSM or νMSM) is an extension of the Standard Model with three right-handed (or sterile) neutrinos. It aims to address within one consistent framework several problems beyond the Standard Model:
  • neutrino oscillations
  • baryon asymmetry of the Universe
  • the existence of dark matter

Standard Model extension


References:
  • T. Asaka and M. Shaposhnikov,
    "The nuMSM, dark matter and baryon asymmetry of the universe",
    Phys. Lett. B620:17-26 (2005) SPIRES
  • T. Asaka, S. Blanchet and M. Shaposhnikov,
    "The nuMSM, dark matter and neutrino masses",
    Phys. Lett. B631:151-156 (2005) SPIRES
  • A. Boyarsky, O. Ruchayskiy and M. Shaposhnikov,
    Ann. Rev. Nucl. Part. Sci. 59 (2009) 191 [arXiv:0901.0011].
    SPIRES

Latest publications on arXiv


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Teaching Schedule 2014

Classical mechanics-II Course page

Location

Leiden University

Description

Content of the course:

  1. Generalised Variables
  2. Lagrangian formalism
  3. Conservation Laws and Noether theorems
  4. Hamiltonian formalism
  5. Phase Space
Suggested literature
  1. Classical Mechanics by Herbert Goldstein
  2. Mechanics by L. Landau and E. Lifshitz
  3. Analytical Mechanics, G.R. Fowles and G.L. Cassiday 6th or 7th edition (Thomson Learning, inc., 1999), ISBN 9780534408138.
Previous lectures
  1. Lecture 1
  2. Lecture 2

Particle Physics and Early Universe Course page

Location

Leiden University

Description

This course will discuss how particle physics defines physics of the early universe, the subsequent cosmological scenario and the current state of the universe. Starting with basics of the Standard Model of particle physics (SM), we will see how the whole intricate structure of this theory exhibits itself in a hot and dense, quickly expanding universe. We will demonstrate that this allows to use astrophysical and cosmological observational data to check the SM. The next part will discuss the shortcomings of the Standard Model and different approaches to resolve them: top-down (theory-based) and bottom-up (phenomenology-based), as well as implications of this beyond the SM physics for the early universe (most importantly: the nature of dark matter, dark energy, mechanisms of baryogenesis and inflation).

Previous lectures:
  1. Lecture 1
  2. Lecture 2
  3. Lecture 3
  4. Lecture 4
  5. Lecture 5
  6. Lecture 6
Literature:
  1. "The primordial density perturbation" by D.H.Lyth and A.R.Liddle, CUP ’09;
  2. "Introduction to the Theory of the Early Universe: Hot Big Bang Theory" by D.Gorbunov & V.Rubakov, World Scientific, 2010;
  3. arxiv:hep-ph/0004188 by J.Garcia-Bellido;
  4. "Principles of physical cosmology" by P.J.E. Peebles, Princeton University Press, 1993;
  5. "Physical foundations of cosmology" by V.Mukhanov, Cambridge University Press, 2005.

Topics in Theoretical Physics:
“Origins of the Standard Model” Course page

Location

Leiden University

Assistants
  • Artem Ivashko <ivashko@lorentz.leidenuniv.nl>
  • Mikhail Goykhman <goykhman@lorentz.leidenuniv.nl>
Description

Content of the course:

  1. From relativistic Quantum Mechanics to Quantum Field Theory
  2. Weak and strong interactions
  3. Model of Fermi and model of Yukawa
  4. Internal inconsistencies of Fermi model. Ways to resolve them
  5. Predictions of massive vector bosons
  6. Non-Abelian gauge symmetries and their spontaneous breaking
  7. Higgs field and Higgs boson
  8. Electroweak theory
  9. Sketchy overview of Quantum Chromodynamics and modern views on strong interactions
  10. Main observational problems “beyond the Standard Model”
Suggested literature
  1. J. Horejsi “Introduction to Electroweak Unification: Standard Model from Tree Unitarity”
  2. “Gauge Theory of elementary particle physics” (any edition) by Ta-Pei Cheng and Ling-Fong Li
  3. As a general reference for Quantum Field theory the book by M.E. Peskin and D.V.Schroeder, “An Introduction to Quantum Field Theory” (any edition)
Course materials
  1. Lecture 1
  2. Lecture 2
  3. Lecture 3
  4. Lecture 4
  5. Lecture 6
  6. Dirac 1928 (Dirac equation)
  7. Dirac 1927 (Quantization of E-M field)

ScienceWISE

The ScienceWISE.info allows scientists to reorder daily new articles according to their personal interests, such that the most interesting articles appear first; bookmark and annotate this articles using scientific ontology; create and organize personal literature collections, perform semantic search for scientific literature.

Main ScienceWISE papers

  • Ontology-Based Word Sense Disambiguation in the Scientific Domain. In: 35th European Conference on Information Retrieval (ECIR 2013), Moscow, Russia, . []
  • From scientific papers to the scientific ontology: dynamical clustering of heterogeneous graphs and ontology crowdsourcing Boston, USA, . []
  • Tag Recommendation for Large-Scale Ontology-Based Information Systems. In: 11th International Semantic Web Conference (ISWC 2012 - Evaluations and Experiments Track), Boston, MA, USA, . []
  • ScienceWISE: A Web-based Interactive Semantic Platform for Paper Annotation and Ontology Editing. In: Extended Semantic Web conference 2012 Greece, . []
  • An Integrated Socio-Technical Crowdsourcing Platform for Accelerating Returns in eScience. In: 10th International Semantic Web Conference (ISWC 2011 - Outrageous Ideas), Bonn, Germany, . 2nd most Outrageous Idea. []
  • ScienceWISE: A Web-based Interactive Semantic Platform for Scientific Collaboration. In: 10th International Semantic Web Conference (ISWC 2011 - Demo), Bonn, Germany, . Best Demo Award. []