Junior (Assistant) Professor in Condensed Matter Theory

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

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 2017: visiting Professor, Donostia International Physics Center, DIPC (San Sebastián, Spain).

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 get my PhD thesis here.

• My GOOGLE SCHOLAR profile.




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)


Recently Organized Events

Entanglement in strongly correlated systems (Benasque, February 5-18  2017)

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)


Some Tutorial Talks

DIPC (San Sebastian) (2017).

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! –


Some Tutorial Documents

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

A practical introduction to some topics on Tensor Networks


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



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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