Dr Alessandro Sergi

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Dr Alessandro Sergi

Associate Professor

MOVED SINCE OCTOBER 2015 TO
DIPARTIMENTO DI SCIENZE MATEMATICHE E INFORMATICHE,
SCIENZE FISICHE E SCIENZE DELLA TERRA
UNIVERSITY OF MESSINA, ITALY

Some physicists are the businessmen of their science.
Others are simply very fond of their research: they are like poets
Anonymous

19th Top UKZN Publisher in 2013

Rated C1 (Established Researcher) by NRF from 2015 to 2020

Associated Member of the National Institute of Theoretical Physics NITHEP

Organizer of the Mini Workshop Quantum Dynamics and Non-Hermitian Hamiltonians
December 3-8, 2014
Location : Physics cluster, School of Chemistry and Physics, UKZN, Pietermartizburg, South Africa

Corresponding Member of the Accademia Peloritana dei Pericolanti,
a scientific society officially formed at Messina (Italy) in 1729 with the authorization of the then Viceroy of Sicily.
The Accademia publishes an electronic, peer-reviewed, open-access journal Atti


PhD (University of Messina, Italy)

Email: ASergi4 PMB Nov2014.jpg
Office Number: P3A, Science Block,
Address:
School of Chemistry & Physics
Private Bag X01
Scottsville
3209
Pietermaritzburg
South Africa
Telephone: +27-(0)33-2605875
Fax: +27-(0)33-2605876



== Selected Publications == ISI Publication List

  • A. Sergi, Time correlation functions for non-Hermitian quantum systems, Physical Review A 91 062108 (9pp) (2015).
  • A. Sergi, Communication: Quantum dynamics in classical spin baths, Journal of Chemical Physics 139 031101 (4pp) (2013).
  • A. Sergi, Non-Hamiltonian Commutators in Quantum Mechanics, Physical Review E 72 066125 (9pp) (2005)
  • A. Sergi and R. Kapral, Quantum-Classical Dynamics of Nonadiabatic Chemical Reactions, Journal of Chemical Physics 118 8566-8575 (2003).
  • A. Sergi, M. Gruning, M. Ferrario and F. Buda, A Density Functional Study of the PYP Chromophore, Journal of Physical Chemistry B 105 4386-4391 (2001)

Research Interests

  • Quantum dynamics in classical spin baths.
  • Non-Hermitian Quantum Dynamics.
  • Quantum dynamics of spin systems coupled to bosonic fields.
  • Algorithms for the simulation of open quantum systems.
  • Dirac's formalism for constrained systems both in classical and in quantum mechanics.
  • Non-adiabatic dynamics in quantum-classical systems.
  • Non-Hamiltonian statistical mechanics in classical and quantum systems.

Science runs in the family

The anthropologist Giuseppe Sergi

Museum of Anthropology Giuseppe Sergi


Ancient Roots

Sergestusque, domus tenet a quo Sergia nomen - Virgil, Aeneid

Sergii or Gens Sergia

Arch of the Sergii


Teaching Resources

Curriculum Vitae

Complete List of Publications


Alessandro Sergi's Group

ASERGI-GROUP-2013.jpg


From left to right: (standing) Derrick Beckhadal (Honours Student), Sashwin Sewran (Masters Student), Daniel Uken (PhD Student), Nkosinathi Dlamini (PhD Student), Wayde Leveringhton (Honours Student); (sitting) Alessandro Sergi, Kostantin Zloshchastiev (Postdoctoral Researcher).

Group Publications

  • K. G. Zloshchastiev and A. Sergi,

Comparison and unification of non-Hermitian and Lindblad approaches with applications to open quantum optical systems, Journal of Modern Optics 61 1298-1308 (2014).

  • A. Sergi and K. G. Zloshchastiev,

Non-Hermitian quantum dynamics of a two-level system and models of dissipative environments, International Journal of Modern Physics B 27 1350163 (20pp) (2013).

  • D. A. Uken, A. Sergi, and F. Petruccione,

On Filtering Schemes in the Quantum-Classical Liouville Approach to Non-adiabatic Dynamics, Physical Review E 88 033301 (7pp) (2013).

  • N. Dlamini and A. Sergi, Quantum dynamics in classical thermal baths,

Computer Physics Communications 184 2474-2477 (2013).

  • G. M. Beck and A. Sergi, Quantum Dynamics of a Nano-Rod under Compression,

Physics Letters A 377 1047-1051 (2013).

  • D. A. Uken and A. Sergi,

Momentum Shift in Nonadiabatic Dynamics, Modern Physics Letters B 25 1271-1280 (2011).

  • D. A. Uken, A. Sergi, and F. Petruccione,

Stochastic Simulation of Nonadiabatic Dynamics at Long Time, Physics Scripta T143 014024 (6pp) (2011).

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