Lattice Gauge Theory group
We are the lattice gauge theory group at the Eotvos University
in Budapest, part of the Department of Theoretical Physics at the
Faculty of Science. Since 2011 we are an NVIDIA GPU Research Center.
Currently there are nine members and we are seeking new ones. Positions are available for PhD students and postdocs for 2 - 4 years appointments. If you are interested please email Sandor Katz at katz {at} bodri {dot} elte {dot} hu or Daniel Nogradi at nogradi {at} bodri {dot} elte {dot} hu.
Our activities are and were funded by various funding agencies for which we are grateful, these include the Lendulet grant of the Hungarian Academy of Sciences, the OTKA-NF-104034 grant of OTKA and the EU Framework Programme 7 grant (FP7/2007-2013)/ERC No 208740.
Research
Our primary interests are:
- Chiral symmetry restoration and deconfinement in QCD with Wilson fermions
- Finite chemical potential
- QCD hadron spectrum
- Eigenvalue distributions of the overlap Dirac operator
- Strongly interacting Higgs sector - strong dynamics
- Conformal gauge theories
Seminar
Weekly ELFT seminars at the Department of Theoretical Physics
Location: 2nd floor, 2.54, Novobatzky room, 1117 Budapest, Pazmany Peter setany 1/a
Time: Wednesdays at 14:15
See the archive for seminars in past years.
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13 February 2019, Andras Laszlo (Wigner-MTA)
General Relativity experiment with spin polarized particle beams slides
In experimental proposals published in the last two decades, a so called frozen spin storage ring concept emerged, for setting upper experimental bounds to electric dipole moment (EDM) of charged elementary particles with spin. In a recent paper of ours (Class.Quant.Grav.35(2018)175003), a fully covariant general relativistic (GR) calculation was presented on the Earth's gravitational modification effect on the spin transport inside such a frozen spin storage ring. It turns out that in certain configurations, Earth's gravity is expected to produce a similar order of magnitude effect as the aimed EDM sensitivity, and thus it becomes kind of realistic to experimentally see this GR effect. If such an experiment could be conducted, it could provide a novel test of GR: with microscopic particles, at relativistic speeds, along non-geodesic (forced) trajectories, and the tensorial nature of GR would be at test, not merely the gravitational drag. In more technical terms: the GR correction to the so called Thomas precession could be tested in lab. For details on the experimental idea, we refer to: arXiv:1901.06217 (Proceedings of Spin2018 Conference).
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20 February 2019, Ferenc Pittler (Bonn)
A novel mechanism for dynamical generation of elementary fermion masses
The Standard Model (SM) is very successful in describing a plethora of low energy phenomena, however it is unable to explain the electro-weak scale naturalness and the fermion mass hierarchy problem. In this talk we numerically verify an intrinsically non-perturbative mechanism for elementary fermion mass generation advocated in 1402.0389 using lattice QCD techniques. This mechanism takes place in non-Abelian gauge models if fermionic chiral symmetries are explicitly broken at the UV cutoff scale and an exact invariance acting on both fermions and scalars forbids power divergent fermion mass corrections. We argue that a complete, composite Higgs-like beyond SM (BSM) scenario can be built using this mass generation mechanism. We also discuss differences-similarities with respect to the current BSM models studied with lattice simulations.
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27 February 2019, Mate Csanad (Eotvos)
TBA
TBA
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6 March 2019, Koushik Mandal (Eotvos)
TBA
TBA
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13 March 2019, Ruchi Chudasama (Eotvos)
TBA
TBA
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20 March 2019, Antal Jakovac (Eotvos)
Bound states in quantum field theory: an FRG study
In the talk we review the traditional approaches to define bound states in quantum theories. In the example of QED with two oppositely charged fermionic fields, we demonstrate the construction of an effective model that contains bound states, and which reproduces the fermionic observables of the original model. Using numerical analysis in the nonrelativistic limit, we argue that considerable simplifications can be made, still maintaining a reasonable accuracy in the computation of the ground state energy.
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12 April 2019, Slava Rychkov (IHES, Ecole Normale Superieure Paris)
TBA
TBA
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24 April 2019, Laurent Lellouch (CNRS Marseille)
TBA
TBA
For students
Our group offers TDK, diploma and PhD topics in Lattice Field Theory.
Please contact Sandor: katz {at} bodri {dot} elte {dot} hu
or Daniel: nogradi {at} bodri {dot} elte {dot} hu
in case you are interested.
Current topics include:
- QCD thermodynamics
- SU(N) gauge theory with topological lattice action
- O(3) non-linear sigma model with topological term
- Beyond Standard Model - technicolor
People
assistant professor
2009 PhD - University of Pisa, Italy
2010-2010 postdoc - IPhT/CEA-Saclay, France
2010-2012 postdoc - University of Zaragoza, Spain
2012-2015 postdoc - ATOMKI, Debrecen, Hungary
2015-2018 postdoc - Eotvos University, Budapest, Hungary
PhD student
2018- Eotvos University, Hungary
professor
2001 PhD - Eotvos University, Hungary
2001-2003 postdoc - DESY, Hamburg, Germany
2003-2005 postdoc - University of Wuppertal, Germany
2006-2012 assistant professor - Eotvos University, Hungary
2012- professor - Eotvos University, Hungary
assistant professor
2005 PhD - University of Leiden, the Netherlands
2005-2007 postdoc - University of Wuppertal, Germany
2007-2009 postdoc - UCSD, USA
2009-2011 senior research fellow - Eotvos University, Budapest
2011 assistant professor - Eotvos University, Budapest
postdoc
2015 PhD - Eotvos University, Hungary
2016-2018 postdoc - Wuppertal University, Germany
2018- postdoc - Eotvos University, Hungary
PhD student
2016- Eotvos University, Hungary
PhD student
2018- Eotvos University, Hungary
Former members
2009 PhD - Eotvos University, Hungary
2010-2015 postdoc - University of Regensburg, Germany
2016- Emmy Noether group leader - University of Frankfurt, Germany
1996 PhD - UCLA, USA
1996-1998 postdoc - University of Colorado, Boulder, USA
1998-2000 postdoc - University of Leiden, the Netherlands
2000-2002 postdoc - DESY, Zeuthen, Germany
2002-2011 professor - University of Pecs, Hungary
2011- senior researcher - ATOMKI, Debrecen, Hungary
2013 PhD - University of Calcutta, India
2013-2016 postdoc - Eotvos University, Hungary
2016- postdoc - National Chiao Tung University, Taiwan
2013 PhD - University of Pecs, Hungary
2013-2016 postdoc - Eotvos University, Budapest
2017- postdoc - Bonn University, Germany
2014 MSc - Eotvos University, Hungary
2005-2006 research assistant - University of Wuppertal, Germany
2007 assistant lecturer - University of Pecs, Hungary
2010 PhD - Eotvos University, Hungary
2010- postdoc - University of Wuppertal, Germany
2017 PhD - Eotvos University, Hungary
2017- postdoc - Wuppertal University, Germany
PhD student
2015 PhD - Eotvos University, Hungary
Publications
Computing
Our group has access to a number of high performance computer installations in Europe and also maintains several PC and GPU clusters on site in Budapest.
Our primary resource is a 128 node cluster with two NVIDIA GTX 275 cards in each node, hosted in Budapest. There is also a 60 node cluster with one NVIDIA GTX 8800 card per node.
In addition we also have access to the Juropa cluster and the BlueGene/P installation in Forschungszentrum Juelich, Germany.
Our collaboriation with the University of Wuppertal, Germany also allows us to use several PC and GPU clusters there.
For visitors
You will most likely stay at the Peregrinus hotel in the downtown area of Pest.
The simplest way to get to/from your hotel from/to the airport is by taxi. The fare should be around 30 euros. Uber also works in Budapest :)
Our department is on the Buda side of the Danube very close to the Petofi Bridge and it is about a 30-35 minutes walk from the hotel:
You exit your hotel, walk past the Great Market Hall (definitely worth a closer look if you have about half an hour or an hour!) and the Corvinus University, cross the Danube on the Szabadsag Bridge and walk South. You will pass the Budapest University of Technology and the Petofi Bridge and our building will be a redish seven-story building on the right. The Department of Theoretical Physics is on the first floor on the Danube facing side of the building:

