From Physics

Dr Alessandro Sergi

Rated B3 (Internationally Acclaimed Researcher) by NRF from 2009 to 2014

UKZN Emergent Researcher for 2008-2009

Member of the Centre for Quantum Technology

Associated Member of the National Institute of Theoretical Physics NITHEP

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

Co-organizer of the CECAM Workshop Fundamental aspects of deterministic thermostats
July 27, 2009 to July 29, 2009
Location : CECAM-HQ-EPFL, Lausanne, Switzerland

PhD(University of Messina, Italy)

Email:
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 and G. S. Ezra, Bulgac-Kusnezov-Nose'-Hoover thermostats,

Physical Review E 81 036705 (14pp) (2010).

• A. Sergi and F. Petruccione, Sampling Quantum Dynamics at Long Time,

Physical Review E 81 032101 (4pp) (2010).

• A. Sergi, I. Sinayskiy, and F. Petruccione, Numerical and Analytical Approach to the Quantum Dynamics

of Two Coupled Spins in Bosonic Baths, Physical Review A 80 012108 (7pp) (2009).

• A. Sergi and F. Petruccione, Nose'-Hoover dynamics in quantum phase space,

Journal of Physics A: Mathematical and Theoretical 41 355304 (14pp) (2008).

• A. Sergi, Deterministic constant-temperature dynamics for dissipative quantum systems,

Journal of Physics A: Mathematical and Theoretical 40 F347-F354 (2007).

• A. Sergi and P. V. Giaquinta, On the geometry and entropy of non-Hamiltonian phase space,

Journal of Statistical Mechanics: Theory and Experiment 02 P02013 (20pp) (2007).

• A. Sergi, Non-Hamiltonian Commutators in Quantum Mechanics,

Physical Review E 72 066125 (9pp) (2005).

• A. Sergi and R. Kapral, Quantum-Classical Limit of Quantum Correlation Functions,

Journal of Chemical Physics 121 7565-7576 (2004).

Research Interests

• 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.

Teaching Resources

Curriculum Vitae

Complete List of Publications

Alessandro Sergi's Group

From left to right: (first line) Emmanuel Obaga (Masters Student), Mireille Megnidio-Tchoukouegno (Masters Student),
Nkosinathi Dlamini (Masters Student), Sashwin Sewran (Honours Student)
(second line) Geoffrey Beck (Masters Student), Daniel Uken (PhD Student), A. Sergi,
(back line) Jared Peacock (Masters Student).

Group Publications

• 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).