Prof Benjamin Béri
Professor of Theoretical Physics
Office: 540a Mott Bld
Phone: +44(0)1223 3 37258
Email: bfb26 @ cam.ac.uk
TCM Group, Cavendish Laboratory
19 JJ Thomson Avenue,
Cambridge, CB3 0HE UK.
I am interested in novel forms of matter emerging from the collective quantum mechanical behaviour of many particles. In my research, these particles may be electrons in certain solid-state materials and devices or a collection of atoms at "ultracold" temperatures.
Most of my current research is on so-called topological phases: in these systems particles develop a strange kind of order that has no local order parameter (like magnetisation is for ferromagnets), but which appears through nonlocal "topological invariants" (abstract analogues of the integer counting the twists of the locally featureless strip on the right). This strange order has a number of striking consequences, such as the emergence of conducting boundaries immune to backscattering by impurities, or exotic particles that underlie novel schemes for quantum information processing.Möbius strip photo by David Benbennick - CC:BY-SA.
Local integrals of motion for topologically ordered many-body localized systems
Phys. Rev. Research 2, 033099 (2020).
Supersymmetry in the Standard Sachdev-Ye-Kitaev model
Phys. Rev. Lett. 124, 236804 (2020).
Fractional topological insulator precursors in spin-orbit fermion ladders
Phys. Rev. B 100, 235122 (2019) [Editors' Suggestion].
Tenfold way and many-body zero modes in the Sachdev-Ye-Kitaev model
Phys. Rev. B 99, 195123 (2019).
Exact nonequilibrium transport in the topological Kondo effect
Phys. Rev. Lett. 119, 027701 (2017).
Signatures of time-reversal-invariant topological superconductivity in the Josephson effect
Phys. Rev. B 94, 174508 (2016).
Topological Photonic Phase in Chiral Hyperbolic Metamaterials
Phys. Rev. Lett. 114, 037402 (2015).
Multichannel Kondo impurity dynamics in a Majorana device
Phys. Rev. Lett. 113, 076401 (2014).
Majorana-Klein hybridization in topological superconductor junctions
Phys. Rev. Lett. 110, 216803 (2013).
Topological Kondo effect with Majorana fermions
Phys. Rev. Lett. 109, 156803 (2012).
Z2 topological insulators in ultracold atomic gases
Phys. Rev. Lett. 107, 145301 (2011).
Local tensor network for strongly correlated projective states
Phys. Rev. Lett. 106, 156401 (2011).
Domain wall in a chiral p-wave superconductor: a pathway for electrical current
Phys. Rev. Lett. 104, 147001 (2010) [Editors' Suggestion].
Topologically stable gapless phases of time-reversal-invariant superconductors
Phys. Rev. B 81, 134515 (2010).