José Abel Hoyos Neto
CV Lattes
Universidade de São Paulo (USP). Instituto de Física de São Carlos (IFSC) (Institutional affiliation for the last research proposal) Birthplace: Brazil
Graduated in Physics (baccalaureate) from the State University of Campinas (2000) and PhD in Physics from the State University of Campinas (2005). Since 2010 he is a professor at the São Carlos Institute of Physics at the University of São Paulo. Has experience in Statistical Physics and Condensed Matter Physics working in the field of phase transitions and strongly correlated systems. (Source: Lattes Curriculum)
- Quantum spin chains, AP.TEM
Abstract
Since the introduction of the Heisenberg model to describe the dynamics of localized spins, quantum chains become useful tools for the appropriate understanding of the fluctuations in several physical systems. The quantum chains emerge in three interconnected topics of physics and mathematical physics, that we split in: a) Exactly integrable quantum chains - where they describe the simp...
- Disorder, dynamics, frustration and topology in quantum condensed matter, AR.EXT
- Quantum phase transitions: effects of disorder and dissipation, AP.R
Abstract
The purpose of this project is to study the effects of disorder and correlation in various quantum phase transitions. The reason for such is manyfold. Many metalic compounds defy Landau's Fermi liquid theory. Among the reasons for such are the effects of disorder and magnetic instability on the quasiparticles due to the proximity of a quantum critical point. It is then important for the...
- Nonequilibrium phase transition in spatial and temporal disordered systems, BP.PD
Abstract
The study of phase transitions and critical phenomena is of great importance,since it allows to understand the underlying mechanisms of matter complexity,e. g., the Anderson-Higgs mechanism of mass generation.In this project, we are interested in non-equilibrium phase transitions to an absorbing state.Models displaying this kind of phase transition are defined by its transition rates a...
- Dynamics of quantum quenched disordered spin chains, BP.PD
Abstract
We intend to study many dynamical aspects of quantum spin chains in the presence of quenched disorder. Firstly, we plan to study the dynamical response of quantum spin chains in the low-temperature regime and in thermal equilibrium. This is important in order to correct interpret the NMR and muon-SR experimental data. Secondly, we plan to study the time evolution of these systems in the...
| 1 / 1 | Ongoing research grants |
| 2 / 2 | Completed research grants |
| 1 / 1 | Ongoing scholarships in Brazil |
| 4 / 1 | Completed scholarships in Brazil |
| 8 / 5 | All research grants and scholarships |
| Associated processes | |
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
| Publications | 13 |
| Citations | 129 |
| Cit./Article | 9.9 |
| Data from Web of Science | |
HRAHSHEH, FAWAZ; HOYOS, JOSE A.; VOJTA, THOMAS. Rounding of a first-order quantum phase transition to a strong-coupling critical point. Physical Review B, v. 86, n. 21, DEC 10 2012. Web of Science Citations: 14. (10/03749-4)
VOJTA, THOMAS; HOYOS, JOSE A.. Infinite-noise criticality: Nonequilibrium phase transitions in fluctuating environments. EPL, v. 112, n. 3, NOV 2015. Web of Science Citations: 18. (13/09850-7)
BARGHATHI, HATEM; HRAHSHEH, FAWAZ; HOYOS, JOSE A.; NARAYANAN, RAJESH; VOJTA, THOMAS. Strong-randomness phenomena in quantum Ashkin-Teller models. PHYSICA SCRIPTA, v. T165, OCT 2015. Web of Science Citations: 7. (13/09850-7)
MARD, H. JAVAN; HOYOS, JOSE A.; MIRANDA, E.; DOBROSAVLJEVIC, V.. Strong-disorder renormalization-group study of the one-dimensional tight-binding model. Physical Review B, v. 90, n. 12, SEP 23 2014. Web of Science Citations: 6. (07/57630-5, 13/09850-7)
HOYOS, JOSE A.; VOJTA, THOMAS. Dissipation effects in random transverse-field Ising chains. Physical Review B, v. 85, n. 17, p. 174403, 2012. Web of Science Citations: 9. (10/03749-4)
AL-ALI, MANAL; HOYOS, JOSE A.; VOJTA, THOMAS. Percolation transition in quantum Ising and rotor models with sub-Ohmic dissipation. Physical Review B, v. 86, n. 7, AUG 13 2012. Web of Science Citations: 2. (10/03749-4)
HOYOS‚ J.A.; VIEIRA‚ A.P.; LAFLORENCIE‚ N.; MIRANDA‚ E.. Correlation amplitude and entanglement entropy in random spin chains. Physical Review B, v. 76, n. 17, p. 174425, 2007.
HOYOS‚ J.A.; MIRANDA‚ E.. Random antiferromagnetic SU (N) spin chains. Physical Review B, v. 70, n. 18, p. 180401, 2004. (01/00719-8)
VOJTA, THOMAS; HOYOS, JOSE A.; MOHAN, PRIYANKA; NARAYANAN, RAJESH. Influence of super-ohmic dissipation on a disordered quantum critical point. JOURNAL OF PHYSICS-CONDENSED MATTER, v. 23, n. 9, SI, MAR 9 2011. Web of Science Citations: 7. (10/03749-4)
HOYOS‚ JA; MIRANDA‚ E.. Phase diagrams and universality classes of random antiferromagnetic spin ladders. Physical Review B, v. 69, n. 21, p. 214411, 2004. (01/00719-8)
DEL MAESTRO, ADRIAN; ROSENOW, BERND; HOYOS, JOSE A.; VOJTA, THOMAS. Dynamical Conductivity at the Dirty Superconductor-Metal Quantum Phase Transition. Physical Review Letters, v. 105, n. 14, OCT 1 2010. Web of Science Citations: 12. (10/03749-4)
HOYOS, J. A.; MIRANDA, E.. Random antiferromagnetic SU(N) spin chains. Physical Review B, v. 70, n. 18, p. 180401-1-180401-4, Nov. 2004. (01/00719-8)
HRAHSHEH, FAWAZ; HOYOS, JOSE A.; NARAYANAN, RAJESH; VOJTA, THOMAS. Strong-randomness infinite-coupling phase in a random quantum spin chain. Physical Review B, v. 89, n. 1, JAN 3 2014. Web of Science Citations: 7. (13/09850-7)
ZHU, QIONG; WAN, XIN; NARAYANAN, RAJESH; HOYOS, JOSE A.; VOJTA, THOMAS. Emerging criticality in the disordered three-color Ashkin-Teller model. Physical Review B, v. 91, n. 22, JUN 8 2015. Web of Science Citations: 16. (13/09850-7)
VOJTA, THOMAS; HOYOS, JOSE A.. Criticality and Quenched Disorder: Harris Criterion Versus Rare Regions. Physical Review Letters, v. 112, n. 7, FEB 20 2014. Web of Science Citations: 23. (13/09850-7)
VOLIOTIS, DIMITRIOS. Multifractality in aperiodic quantum spin chains. Journal of Physics A-Mathematical and Theoretical, v. 52, n. 47, NOV 22 2019. Web of Science Citations: 0. (17/11484-0)
VOJTA, THOMAS; IGO, JOHN; HOYOS, JOSE A.. Rare regions and Griffiths singularities at a clean critical point: The five-dimensional disordered contact process. Physical Review E, v. 90, n. 1, JUL 29 2014. Web of Science Citations: 8. (13/09850-7)