Institute of Astronomy

- Kaloian Lozanov


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Office: KAVLI K26
Office Tel: (01223) 760797
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My primary research is focused on understanding inflation and the subsequent stage of reheating: the period when the universe first got populated with particles during the hot big bang. I am exploring the rich nonlinear dynamics during reheating, the initial conditions for reheating set up during inflation, and looking for possible observational implications. I am developing numerical methods which take advantage of high performance computing to improve our understanding of the evolution of non-equilibrium field theories. My broader interests include cosmological perturbation theory, solitons and cosmic defects, phase transitions in the early Universe, primordial gravitational waves, primordial black holes, magnetogenesis and baryogenesis.



Selected papers

  • K. D. Lozanov and M. A. Amin: The Equation of State and Duration to Radiation Domination After Inflation [arXiv:1608.01213]

  • K. D. Lozanov and M. A. Amin: The charged inflaton and its gauge fields: preheating and initial conditions for reheating, JCAP06(2016)032 [arXiv:1603.05663]

  • K. D. Lozanov and M. A. Amin: End of inflation, oscillons and matter-antimatter asymmetry, Phys. Rev. D 90, 083528 (2014) [arXiv:1408.1811]

  • A.C. Fabian, E. Kara, D. Walton, D. Wilkins, R.R. Ross, K. Lozanov, P. Uttley, L. Gallo, A. Zoghbi, G. Miniutti, T. Boller, W.N. Brandt, E.M. Cackett, C-Y. Chiang, T. Dwelly, J. Malzac, J.M. Miller, E. Nardini, G. Ponti, R.C. Reis, C.S. Reynolds, J. Steiner, Y. Tanaka and A.J. Young: Long XMM observation of the Narrow-Line Seyfert 1 galaxy IRAS13224-3809: rapid variability, high spin and a soft lag, Mon.Not.Roy.Astron.Soc. 429 (2013) 2917 [arXiv:1208.5898]



  • 2013-present: PhD at Institute of Astronomy and Kavli Institute for Cosmology, Cambridge with Mustafa Amin and Anthony Challinor
  • 2009-2013: MSci, BA in Experimental and Theoretical Physics at Trinity College, University of Cambridge


MSci, BA

Awards and Prizes

  • 2011: Top of the Year for the Natural Sciences Tripos (ranked 1st of 592 overall)
  • 2010: Cavendish Part IA Prize (ranked 1st in Physics overall)
  • 2009: IPhO Mexico, Silver Medal
  • 2008: IPhO Vietnam, Bronze Medal



1. Undergraduate supervisor:

  • Astrophysical Fluid Dynamics, Part II ETP (3rd year Physics), Cambridge, Lent term 2014-2016
  • Advanced Quantum Mechanics, Part II ETP (3rd year Physics), Cambridge, Michaelmas term 2015
  • Relativity, Part II ETP (3rd year Physics), Cambridge, Michaelmas term 2013, 2015
  • Electrodynamics and Optics, Part II ETP (3rd year Physics), Cambridge, Michaelmas term 2014
  • Physics, Part IA (1st year Physics), Cambridge, Michaelmas, Lent and Easter terms 2013-2015

2. Leader of the Bulgarian national team, IYPT 2010, Vienna, Austria.

Page last updated: 16 August 2016 at 18:18