Ultrafast laser-driven many-body dynamics and Kondo coherence collapse

W. Zhu; Benedikt Fauseweh; Alexis Chacon; Jian-Xin Zhu

doi:10.1103/physrevb.103.224305

Ultrafast laser-driven many-body dynamics and Kondo coherence collapse

Physical Review B ◽

10.1103/physrevb.103.224305 ◽

2021 ◽

Vol 103 (22) ◽

Author(s):

W. Zhu ◽

Benedikt Fauseweh ◽

Alexis Chacon ◽

Jian-Xin Zhu

Keyword(s):

Ultrafast Laser ◽

Many Body ◽

Body Dynamics ◽

Coherence Collapse

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Many body dynamics

10.1093/oso/9780198708636.003.0018 ◽

2018 ◽

Author(s):

Joseph F. Boudreau ◽

Eric S. Swanson

Keyword(s):

Statistical Mechanics ◽

Body Problem ◽

Many Body ◽

Complex Objects ◽

Constrained Dynamics ◽

Gravitational Systems ◽

Body Dynamics ◽

System Temperature ◽

Speed Up ◽

Gravitating Systems

Specialized techniques for solving the classical many-body problem are explored in the context of simple gases, more complicated gases, and gravitating systems. The chapter starts with a brief review of some important concepts from statistical mechanics and then introduces the classic Verlet method for obtaining the dynamics of many simple particles. The practical problems of setting the system temperature and measuring observables are discussed. The issues associated with simulating systems of complex objects form the next topic. One approach is to implement constrained dynamics, which can be done elegantly with iterative methods. Gravitational systems are introduced next with stress on techniques that are applicable to systems of different scales and to problems with long range forces. A description of the recursive Barnes-Hut algorithm and particle-mesh methods that speed up force calculations close out the chapter.

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Periodically refreshed baths to simulate open quantum many-body dynamics

Physical Review B ◽

10.1103/physrevb.104.045417 ◽

2021 ◽

Vol 104 (4) ◽

Author(s):

Archak Purkayastha ◽

Giacomo Guarnieri ◽

Steve Campbell ◽

Javier Prior ◽

John Goold

Keyword(s):

Many Body ◽

Open Quantum ◽

Body Dynamics

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Ergodic and nonergodic many-body dynamics in strongly nonlinear lattices

Physical Review E ◽

10.1103/physreve.103.052213 ◽

2021 ◽

Vol 103 (5) ◽

Author(s):

Dominik Hahn ◽

Juan-Diego Urbina ◽

Klaus Richter ◽

Rémy Dubertrand ◽

S. L. Sondhi

Keyword(s):

Many Body ◽

Strongly Nonlinear ◽

Nonlinear Lattices ◽

Body Dynamics

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Stacking angle dependent multiple excitonic resonances in bilayer tungsten diselenide

Nanophotonics ◽

10.1515/nanoph-2020-0034 ◽

2020 ◽

Vol 9 (12) ◽

pp. 3881-3887

Author(s):

Ankit Arora ◽

Pramoda K. Nayak ◽

Tejendra Dixit ◽

Kolla Lakshmi Ganapathi ◽

Ananth Krishnan ◽

...

Keyword(s):

Chemical Vapour ◽

Optoelectronic Devices ◽

Interlayer Coupling ◽

Higher Order ◽

Doping Effect ◽

Many Body ◽

Si Substrate ◽

Tungsten Diselenide ◽

Body Dynamics ◽

Insight Into

AbstractWe report on multiple excitonic resonances in bilayer tungsten diselenide (BL-WSe2) stacked at different angles and demonstrate the use of the stacking angle to control the occurrence of these excitations. BL-WSe2 with different stacking angles were fabricated by stacking chemical vapour deposited monolayers and analysed using photoluminescence measurements in the temperature range 300–100 K. At reduced temperatures, several excitonic features were observed and the occurrences of these exitonic resonances were found to be stacking angle dependent. Our results indicate that by controlling the stacking angle, it is possible to excite or quench higher order excitations to tune the excitonic flux in optoelectronic devices. We attribute the presence/absence of multiple higher order excitons to the strength of interlayer coupling and doping effect from SiO2/Si substrate. Understanding interlayer excitations will help in engineering excitonic devices and give an insight into the physics of many-body dynamics.

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