# Rudolph C. Hwa

Rudolph Hwa's research interest is in the interface among particle,
nuclear, statistical and nonlinear physics. A large part of his work is in
the area of strong interaction in hadronic
and nuclear collisions at very high energies. His research topics include
the construction of models for multiparticle production, intermittency and
fractal structures in particle and
nuclear physics, formation of quark-gluon plasma in relativistic heavy-ion
collisions, J/psi suppression,
quark-hadron phase transition, chaotic behaviors in hard and soft
processes, classical and quantum nonlinear dynamics, and universal
properties of fluctuations in time series and
spatial patterns in a wide range of problems in quantum optics,
condensed-matter, particle, nuclear, statistical and medical physics.
Recently the scope of his work has been
extended to include the study of nonlinear properties of human brain
activities recorded in EEG.

## Some selected publications:

1. R. C. Hwa, "Fractal Measures in Multiparticle Production," Phys. Rev. D
41, 1456 (1990).

2. R. C. Hwa, "Scaling Exponent of Multiplicity Fluctuation in Phase
Transition," Phys. Rev. D 47, 2773 (1993).

3. M. R. Young, Y. Qu, S. Singh, and R. C. Hwa, "Scaling Behavior of Photon
Number Fluctuations at Laser Threshold," Optics Commun. 105, 325 (1994).

4. I. M. Dremin and R. C. Hwa, "Quark and Gluon Jets in QCD: Factorial and
Cumulant Moments." Phys. Rev. D 49, 5805 (1994).

5. R. C. Hwa, "Quark-Gluon plasma 2, "World Scientific, Singapore, 1995.

6. Z. Cao and R. C. Hwa, "Chaotic Behavior of Particle Production in
Branching Processes," Phys. Rev. D 53, 6608 (1996).

7. Z. Cao and R. C. Hwa, "Fluctuations of Spatial Patterns as a Measure of
Classical Chaos," Phys. Rev. E 56, 326 (1997).

8. R. C. Hwa, J. Pisut, and N. Pisutova, "Phenomenological Evidence for
Gluon Depletion in pA Collisions," Phys. Rev. Lett. 85, 4008 (2000).

9. R. C. Hwa, "Fluctuation Index as a Measure of Heartbeat Irregularity,"
Nonlinear Phenomena in Complex Systems 3, 93 (2000).

10. R. C. Hwa and Q. H. Zhang, "Void Analysis of Hadronic Density
Fluctuations at the Quark-Hdron Phase Transition," Phys. Rev. C 64, 054904
(2001).

11. R. C. Hwa and T. C. Ferree, "Scaling Properties of Fluctuations in
Human Electroencephalogram," Phys. Rev. E 66, 021901 (2002).