Dr. Debasish Banerjee

Profil

Zusammenfassung

Dr. Banerjee entwickelt theoretische und rechnerische Methoden zur Simulation von Quantensystemen mit Eichsymmetrien, insbesondere Gittereichwerttheorien. Seine Expertise umfasst die Konstruktion von Quantensimulatoren mit ultrakalten Atomen sowie numerische Monte-Carlo-Verfahren zur Untersuchung von Vielteilchen-Quantendynamik, Phasenübergängen und exotischen Phänomenen wie Quantenschrammen in Systemen mit lokalen Zwangsbedingungen.

Skills

Name

Dr. Debasish Banerjee

Titel

Dr.

Fakultät

Mathematisch-Naturwissenschaftliche Fakultät

Institut

Institut für Physik

Arbeitsgruppe

Theoretische Teilchenphysik - Gitterfeldtheorie (S)

E-Mail

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Telefon

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HU-FIS-Profil

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Zuletzt gescrapt

28.6.2026, 01:02:50

• DFG-Eigene Stelle: Neue Perspektiven in stark gekoppelten Systemen: Vorbereitung auf Quantensimulatoren

  Quelle ↗

  Förderer: DFG Eigene Stelle (Sachbeihilfe) Zeitraum: 08/2018 - 11/2020 Projektleitung: Dr. Debasish Banerjee, Prof. Dr. Agostino Patella

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• Atomic Quantum Simulation of Dynamical Gauge Fields Coupled to Fermionic Matter: From String Breaking to Evolution after a Quench

  2012

  Physical Review Letters · 368 Zitationen · DOI

  Using a Fermi-Bose mixture of ultracold atoms in an optical lattice, we construct a quantum simulator for a U(1) gauge theory coupled to fermionic matter. The construction is based on quantum links which realize continuous gauge symmetry with discrete quantum variables. At low energies, quantum link models with staggered fermions emerge from a Hubbard-type model which can be quantum simulated. This allows us to investigate string breaking as well as the real-time evolution after a quench in gauge theories, which are inaccessible to classical simulation methods.

• Atomic Quantum Simulation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="bold">U</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mi>N</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>SU</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mi>N</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math>Non-Abelian Lattice Gauge Theories

  2013

  Physical Review Letters · 298 Zitationen · DOI

  Using ultracold alkaline-earth atoms in optical lattices, we construct a quantum simulator for U(N) and SU(N) lattice gauge theories with fermionic matter based on quantum link models. These systems share qualitative features with QCD, including chiral symmetry breaking and restoration at nonzero temperature or baryon density. Unlike classical simulations, a quantum simulator does not suffer from sign problems and can address the corresponding chiral dynamics in real time.

• Heavy quark momentum diffusion coefficient from lattice QCD

  2012

  Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology · 204 Zitationen · DOI

  The momentum diffusion coefficient for heavy quarks is studied in a deconfined gluon plasma in the static approximation by investigating a correlation function of the color electric field using Monte Carlo techniques. The diffusion coefficient is extracted from the long-distance behavior of such a correlator. For temperatures ${T}_{c}&lt;T\ensuremath{\lesssim}2{T}_{c}$, our nonperturbative estimate of the diffusion coefficient is found to be very different from the leading-order perturbation theory and is in the right ballpark to explain the heavy quark flow seen by the PHENIX Collaboration at the RHIC experiment.

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