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Junior (Assistant) Professor in Condensed Matter Theory


Institut für Physik, KOMET 337
Staudingerweg 7 / Room 03-134
Johannes Gutenberg-Universität, 55099 Mainz, Germany


roman.orus@uni-mainz.de
Phone: +49 6131 39 204 61 / Fax: +49 6131 39 209 54
Skype: roman.orus




Quick academic bio:

April 2013 - Today: Junior Professor (W1) in Condensed Matter Theory at the Johannes-Gutenberg Universität Mainz (Mainz, Germany), in the KOMET 337 group.

March – April 2016: visiting Professor, Laboratoire de Physique Théorique, Université Paul Sabatier – CNRS (Toulouse, France).

December 2010 – March 2013: postdoctoral research fellow (Marie Curie) at the Max Planck Institute of Quantum Optics (Garching, Germany), in the Theory Division led by Prof. Ignacio Cirac.

September 2006 – November 2010: postdoctoral research fellow (ARC) at The University of Queensland (Brisbane, Australia), in the group of Entanglement, Many-body Systems & Simulations led by Prof. Guifre Vidal.

July 2006: PhD in Physics at the University of Barcelona (Spain) under the supervision of Prof. Jose I. Latorre.

Quick curiosities:

• I was born in Barcelona. I like playing my guitars, diving, hiking, traveling, cooking and thinking. And I also like coffee, specially this one.

• You can download my PhD thesis here.

• My GOOGLE SCHOLAR profile.

• My RESEARCHER-ID:

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News

• 23/08/2016: New paper! Systematic construction of spin liquids on the square lattice from tensor networks with SU(2) symmetry

• 02/08/2016: New paper! The spin-1/2 Kagome XXZ model in a field: competition between lattice nematic and solid orders

• 19/07/2016: New paper! Entanglement Continuous Unitary Transformations

• 24/05/2016: Paper accepted in PRB! Symmetry-protected intermediate trivial phases in quantum spin chains

• 17/05/2016: New paper! Kitaev honeycomb tensor networks: exact unitary circuits and applications

• 11/02/2016: Paper accepted in PRB! Spin-S kagome quantum antiferromagnets in a field with tensor networks

• 04/02/2016: I will be in Toulouse from 7/3 to 16/04.

• 04/02/2016: Marc Ziegler got the university prite for his Master thesis. Congratulations!

• 20/11/2015: New paper! Symmetry-protected intermediate trivial phases in quantum spin chains

• 20/11/2015: Dawei Pang visiting on 23rd and 24th, and talking about AdS/CFT

• 19/11/2015: Adil Gangat visiting until December

• 17/09/2015: workshop in Benasque approaching: Entanglement in strongly correlated systems

• 17/09/2015: New paper! Spin-S kagome quantum antiferromagnets in a field with tensor networks

• 07/07/2015: Paper accepted in PRB! The iPEPS algorithm, improved: fast full update and gauge fixing

• 01/06/2015: Today I learned that, as of today, my review in Annals of Physics is one of the most frequently downloaded papers from the journal

• 01/06/2015: Charalampas Papadopoulos will join the group as a PhD student. Welcome!

• 06/05/2015: Paper accepted in PRB! All spin-1 topological phases in a single spin-2 chain

• 04/05/2015: Ryan Sweke visiting until mid-July.

• 19/3/2015: New paper! The iPEPS algorithm, improved: fast full update and gauge fixing

• 17/3/2015: Philipp Schmoll joins the group as master student. Welcome!

• 16/02/2015: Paper published in PRL! Topological transitions from multipartite entanglement with tensor networks: a procedure for sharper ans faster characterization.

• 10/12/2014: New paper! All spin-1 topological phases in a single spin-2 chain

• 3/10/2014: Kai Zapp and Serkan Sahin join the group as master students. Welcome!

• 3/10/2014: New paper! Topological Minimally Entangled States via Geometric Measure

• 24/9/2014: I have been awarded the Early Career Prize from the European Physical Society (EPS press release and JGU press release).

• 24/7/2014: New paper! Advances on tensor network theory: symmetries, fermions, entanglement, and holography

• 2/7/2014: Paper published in Annals of Physics! A practical introduction to tensor networks: matrix product states and projected entangled pair states.

• 4/6/2014: New paper! Topological transitions from multipartite entanglement with tensor networks: sharper and faster

• on July 2014: Lecturing on Tensor Networks in a summer school in Les Houches (France).

• on 10-13/6/2014: Lecturing on Tensor Networks at the University of the Basque Country, Solano’s Group (Spain).

• on 5/6/2014: Lecturing on Tensor Networks in a summer school in Jouvence (Canada).

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Media

An interview about a workshop I organized in Benasque for Aragón Radio (in Spanish, minute 34:20)

• Highlight in Quanta Magazine

An interview for the popular science youtube channel Benasque ConCiencia, together with David Perez-Garcia (in Spanish)

• Some of my work was highlighted in the popular science blog ScienceNews: part 1 and part 2

An interview about a workshop I organized in Benasque for Radio Huesca, Cadena Ser (in Spanish)

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Recently Organized Events

Entanglement in strongly correlated systems (Benasque, February 14-27  2016)

Numerical and analytical methods for strongly correlated systems (Benasque, August 24 – September 13 2014)

Perspectives on Quantum Many-Body Entanglement (Mainz, September 25-27 2013)

Networking tensor networks: many-body systems and simulations (Benasque, May 7-19 2012)

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Some Tutorial Talks

Kashiwa (Japan) (2016): part 1 (youtube), part 2 (youtube), part 2 (slides)

Southampton (UK) (2016): part 1, part 2

Les Houches (France) (2014).

Jouvence (Canada) (2014).

DPG meeting (2014).

Taipei (taiwan) (2012) – also in youtube! –

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Some Tutorial Documents

Advances on tensor network theory: symmetries, fermions, entanglement, and holography

A practical introduction to some topics on Tensor Networks

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Supervised theses

Philipp Schmoll (Master, JGU, 2016): Exact tensor network states for the Kitaev honeycomb model

Serkan Sahin (Master, JGU, 2015): Entanglement-Continuous Unitary Transformations; towards a new algorithm for quantum many-body systems

Kai Zapp (Master, JGU, 2015): MPS for lattice gauge theories

Marc Ziegler (Master, JGU, 2015, uni prize): Tensor network methods for infinite 2d systems; a study of the Heisenberg quantum antiferromagnet on the Kagome lattice

Jacob Jordan (PhD, UQ, 2011): Studies of infinite two-dimensional quantum lattice systems with PEPS

David Evans (Honors, UQ, 2009): Study of the TEBD algorithm to simulate quantum many-body systems in one spatial dimension

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Funding

Research funding is acknowledged from the Johannes Gutenberg-Universität, the Graduate School of Excellence MAINZ, the German Academic Exchange Service (DAAD), and the Deutsche Forschungsgemeinschaft (DFG).

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