Tobias Fritz

Welcome to my page. I am a "physical mathematician" in the group of Antonio Acín at ICFO in Castelldefels (Barcelona). My scientific interests revolve around fundamental physics and its natural connections to pure mathematics and computer science. I'm a bird; so far, I haven't been able to fly, though.

Sometimes I like to hang around on Orpheus e.V. or on the n-Category Café.

Papers and preprints

Notes and Slides from Talks

• Quantum correlations and group C*-algebras.
• Witnessing Infinite-dimensional State Spaces.
• Horn Formulas as Linear Inequalities and Nonlocality Paradoxes.
• Tsirelson's problem and Kirchberg's conjecture.
• Cuntz' proof of Bott periodicity for C*-algebras.
• Quantum correlations and group C*-algebras.
• Curious properties of iterated measurements.
• Abstract Convexity: Results and Speculations.
• Abstract Convexity.
• The Geometry of the Standard Model.
• The Geometry of Black Holes.

• Himmelsmechanik.
• Verschränkung und Verschränkungsmaße.
• Episodengedächtnis bei rabenartigen Vögeln.
• Evolutionäre Algorithmen.

Travel Calendar

• 2012 Apr 23–27: Workshop on Connes' Embedding Conjecture, Neuchâtel.
• 2012 Apr 30–May 6: Universität Leipzig, with Andreas Thom.
• 2012 Aug 26–31: Information Flow and Its Applications, Schloss Dagstuhl.

Scientific Principles

• Restrain from speculative discussions about fundamental physics. Rigorous mathematical arguments and clear experimental results are superior over philosophical arguments and personal opinions.


• Mathematical proofs should not merely be concatenations of formal manipulations, but also convey mental images representing a certain intuition. (This is very difficult to achieve, and mostly I do not succeed despite attempting it.) Another principle of exposition is to split long considerations into bite-sized pieces, such that each piece makes sense on its own.