Fate of the one-dimensional Ising quantum critical point coupled to a gapless phonon
- Date
- Nov 4, 2015
- Time
- 2:00 PM - 3:00 PM
- Speaker
- Ori Alberton
- Affiliation
- Weizmann Institute
- Language
- en
- Main Topic
- Physik
- Other Topics
- Physik
- Host
- CMT seminars
- Description
- The problem of a quantum Ising degree of freedom coupled to a gapless bosonic mode appears naturally in many one dimensional systems, yet surprisingly little is known how such a coupling affects the Ising quantum critical point. We investigate the fate of the critical point in a regime, where the weak coupling RG indicates a flow toward strong coupling. Using renormalization group analysis and numerical density matrix renormalization group (DMRG) calculations we show that quantum fluctuations near the critical point cause phase separation on an emergent long scale, and the transition becomes first order. This suggests the existence of a tricritical point with potentially exotic properties.
Last modified: Nov 4, 2015, 8:38:57 AM
Location
Max-Planck-Institut für Physik komplexer Systeme (Seminarroom 4)Nöthnitzer Straße3801187Dresden
- Phone
- + 49 (0)351 871 0
- MPI-PKS
- Homepage
- http://www.mpipks-dresden.mpg.de
Organizer
Max-Planck-Institut für Physik komplexer SystemeNöthnitzer Straße3801187Dresden
- Phone
- + 49 (0)351 871 0
- MPI-PKS
- Homepage
- http://www.mpipks-dresden.mpg.de
Scan this code with your smartphone and get directly this event in your calendar. Increase the image size by clicking on the QR-Code if you have problems to scan it.
Legend
- Biology
- Chemistry
- Civil Eng., Architecture
- Computer Science
- Economics
- Electrical and Computer Eng.
- Environmental Sciences
- for Pupils
- Law
- Linguistics, Literature and Culture
- Materials
- Mathematics
- Mechanical Engineering
- Medicine
- Physics
- Psychology
- Society, Philosophy, Education
- Spin-off/Transfer
- Traffic
- Training
- Welcome