Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series SEM-LPTMC
Subjects cond-mat.mes-hall
Date Monday 11 December 2017
Time 11:00
Institute LPTMC
Seminar Room tower 13-12 room 5-23
Speaker's Last Name Mazza
Speaker's First Name Leonardo
Speaker's Email Address leonardo [dot] mazza [at] phys [dot] ens [dot] fr
Speaker's Institution Département de physique ENS Paris
Title Majorana fermions in particle-conserving settings
Abstract The paradigmatic condensed-matter models where zero-energy localized Majorana fermions have been studied so far have the distinguishing feature of not conserving the number of fermions. Moreover, the accepted definition of "Majorana fermion" naturally belongs to this scenario. Is it possible to discuss Majorana fermions in "canonical" particle-conserving settings? In this seminar I will present several exact and numerical results on Majorana fermions in particle-conserving scenarios. I will start from the discussion of a model for bosons and fermions where, in a proper limit, the physics of the celebrated Kitaev's chain appears. I will continue by presenting exact results on Majorana fermions in ladder models where the two legs of the system can only exchange pair of particles. Finally, I will comment on the possibility of making experiments with Majorana fermions in particle-conserving settings. References: Iemini, LM, Rossini, Fazio and Diehl, PRL *115*, 156402 (2015) Iemini, LM, Fallani, Zoller, Fazio, Dalmonte, PRL *118*, 200404 (2017)
arXiv Preprint Number

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