Dr. Jose Roberto Drugowich de Felicio

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Academic Career Length

49Years (1978-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 December 1985 in Physical Review B

Journal Article

Hamiltonian studies of the Blume-Emery-Griffiths model

F. C. Alcaraz

Jose Roberto Drugowich de Felicio

R. Köberle

J. F. Stilck

Finite-size scaling methods are used to obtain the phase diagram of the Blume-Emery-Griffiths model in its time-continuous Hamiltonian version. In particular, we locate the tricritical point, where a first-order transition changes to one of second order, and evaluate its exponents. The exponents are in complete agreement with Nienhuis’ conjecture. We also discuss a recent conjecture concerning the universality of the ratio of mass-gap amplitudes. Our results suggest the validity of this conjecture even at the tricritical point.

30 August 2002 in Physical Review E

Journal Article

Universality and scaling study of the critical behavior of the two-dimensional Blume-Capel model in short-time dynamics

Roberto da Silva

Nelson A. Alves

Jose Roberto Drugowich de Felicio

In this paper we study the short-time behavior of the Blume-Capel model at the tricritical point as well as along the second order critical line. Dynamic and static exponents are estimated by exploring scaling relations for the magnetization and its moments at an early stage of the dynamic evolution. Our estimates for the dynamic exponents, at the tricritical point, are

z = 2.215 (2)

and

θ = - 0.53 (2) .

1 June 2002 in Physics Letters A

Journal Article

Mixed initial conditions to estimate the dynamic critical exponent in short-time Monte Carlo simulation

Roberto da Silva

Nelson A Alves

Jose Roberto Drugowich de Felicio

11 March 1987 in Journal of Physics A: General Physics

Journal Article

Operator content of the Blume-Capel quantum chain

D B Balbao

Jose Roberto Drugowich de Felicio

29 April 2003 in Physical Review E

Journal Article

Short-time critical dynamics of the Baxter-Wu model

Everaldo Arashiro

Jose Roberto Drugowich de Felicio

We study the early time behavior of the Baxter-Wu model, an Ising model with three-spin interactions on a triangular lattice. Our estimates for the dynamic exponent z are compatible with results recently obtained for two models which belong to the same universality class of the Baxter-Wu model: the two-dimensional four-state Potts model and the Ising model with three-spin interactions in one direction. However, our estimates for the dynamic exponent

θ

of the Baxter-Wu model are completely different from the values obtained for those models. This discrepancy could be related to the absence of a marginal operator in the Baxter-Wu model.

21 April 2006 in Physical Review E

Journal Article

Short-time dynamics of the helix-coil transition in polypeptides

Everaldo Arashiro

Jose Roberto Drugowich de Felicio

Ulrich H. E. Hansmann

We study the critical relaxation of the helix-coil transition in all-atom models of polyalanine chains. We show that at the critical temperature the decay of a completely helical conformation can be described by scaling relations that allow us estimating the pertinent critical exponents. The present approach opens a new way for characterizing transitions in proteins and may lead to a better understanding of their folding mechanism. An application of the technique to the 34-residue human parathyroid fragment PTH(1-34) supports universality of the helix-coil transition in homopolymers and (helical) proteins.

About Me

Physicist, earned his Ph.D. in 1982 at the Institute of Physics of São Carlos, USP. In 1996, he attained the position of full professor at the Faculty of Philosophy, Sciences, and Letters of Ribeirão Preto (USP). His work has focused on the mapping of statistical physics models in field theory, phenomenological renormalization group, conformal invariance, and Monte Carlo simulations with renormalization group. Currently, he is engaged in the study of the dynamics of phase transitions using simulations in short times. He has mentored numerous students in master's, doctoral, and post-doctoral programs. He held the position of chief of staff in the rector's office at the University of São Paulo (1990-92 and 2014-15) and served as the general coordinator of USP administration (1992-93). Additionally, he served as the Director of CNPq (2004-10) and was a member of the management committees of the Sectorial Funds of the Amazon, Oil, Energy, and Informatics. He is a member of the Order of National Scientific Merit.

Dr. Jose Roberto Drugowich de Felicio

Dr. Jose Roberto Drugowich de Felicio

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Representative Publications

About Me