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[Fizinfo] BME Elméleti Fizika Tanszék szemináriuma - helyesbítés!


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  • From: tcsaba <tcsaba AT eik.bme.hu>
  • To: fizinfo AT lists.kfki.hu
  • Subject: [Fizinfo] BME Elméleti Fizika Tanszék szemináriuma - helyesbítés!
  • Date: Sat, 02 Sep 2017 07:53:28 +0200

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Az előbbi hirdetménytők eltérően Dóra Balázs szeminárima 10:15-kor kezdődik
2017. szeptember 8-án.
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M E G H Í V Ó - I N V I T A T I O N

Seminar Series of the Department of Theoretical Physics at the
Budapest University of Technology and Economics

Balázs Dóra
(Department of Theoretical Physics,
Budapest University of Technology and Economics)

Momentum-space entanglement and Loschmidt echo in Luttinger liquids


Luttinger liquids arise by coupling left- and right-moving particles through interactions in one dimension. This most natural partitioning of Luttinger liquids is investigated by the momentum-space entanglement after a quantum quench using analytical and numerical methods. We show that the momentum-space entanglement spectrum of a LL possesses many universal features both in equilibrium and after a quantum quench. The largest entanglement eigenvalue is identical to the Loschmidt echo, i.e. the overlap of the disentangled and final wavefunctions of the system. The entanglement gap is universal both in equilibrium and after a quantum quench. The momentum-space entanglement entropy is always extensive and saturates fast to a time independent value after the quench, in sharp contrast to a spatial bipartitioning.


Időpont: 2017. szeptember 8. péntek, 10:15
Helyszín: BME Fizikai Intézet, Elméleti Fizika Tanszék,
Budafoki út 8. F-épület, III lépcsőház, szemináriumi szoba


  • [Fizinfo] BME Elméleti Fizika Tanszék szemináriuma - helyesbítés!, tcsaba, 09/02/2017

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