Felipe Barra

Email: fbarra@dfi.uchile.cl

Address: Blanco Encalada 2008

Phone: 9784350

Charge: Profesor Asociado

Web Page

Research Lines

Mecánica Estadística, sistemas fuera del equilibrio.
Caos y Sistemas Dinámicos
Caos Ondulatorio (wave or quantum chaos)
interacción Onda-Defecto

Publications

45. Dissipation in small systems: Landau-Zener approach, F. Barra and M. Esposito, Phys. Rev. E 93 062118 (2016).
44. Multiple scattering of elastic waves by pinned dislocation segments in a continuum, D. Churochkin, F. Barra, F. Lund, A. Maurel, V. Pagneux, Wave Motion 60 220 (2016).
43. The thermodynamic cost of driving quantum systems by their boundaries, F. Barra, Sci. Rep. 5 14873 (2015).
42. Tuning the wavelength of spoof plasmons by adjusting the impedance contrast in an array of penetrable inclusions, M. L. Cordero, A. Maurel, J.-F. Mercier, S. Felix, and F. Barra, Appl. Phys. Lett. 107 084104 (2015); doi: 10.1063/1.4929497
41.The Use of Ultrasound to Measure Dislocation Density, F. Barra, R. Espinoza-González, H. Fernández, F. Lund, A, Maurel and V. Pagneux JOM (2015) DOI: 10.1007/s11837-015-1458-9.
40. Nonequilibrium quantum phase transitions in the XY model: comparison of unitary time evolution and reduced density matrix approaches, S. Ajisaka, F. Barra and B. Zunkovic, New. J. Phys 16 (2014) 033028.
39. Nonequilibrium mesoscopic Fermi-reservoir distribution and particle current through a coherent quantum system, S. Ajisaka and F. Barra, Phys. Rev. B 87 195114 (2013)
38. Current in coherent quantum systems connected to mesoscopic Fermi reservoirs, S. Ajisaka, F. Barra, C. Mejía-Monasterio, and T. Prosen, Phys. Scr. 86 058501 (2012).
37. Particle and energy transport in quantum disordered and quasi-periodic chains connected to mesoscopic Fermi reservoirs, S. Ajisaka, F. Barra, C. Mejía-Monasterio, and T. Prosen, AIP Conf. Proc. 1468 6-15 (2012).
36. Nonequlibrium particle and energy currents in quantum chains connected to mesoscopic Fermi reservoirs S. Ajisaka, F. Barra, C. Mejía-Monasterio, and T. Prosen, Phys. Rev. B 86 125111 (2012).
35. Diffusive transport of waves in a periodic waveguide, F. Barra, V. Pagneux and J. Zuñiga, Phys. Rev. E 85 016209 (2012).
34. Shear modulus of an elastic solid under external pressure as a function of temperature: The case of helium, F. Barra, F. Lund, N. Mujica and S. Rica, Phys. Rev. B 85 064103 (2012).
33. Quantum statistical mechanics in infinitely extended systems – C* algebraic approach, Shuichi Tasaki, Shigeru Ajisaka and Felipe Barra, Bussei Kenkyu, 97, No. 3 483 (2011) (ISSN 0525-2997).
32. Number of propagating modes of a diffusive periodic waveguide in the semiclassical limit, F. Barra, A. Maurel, V. Pagneux and J. Zuñiga, Phys. Rev. E 81 066210 (2010).
31. Surface acoustic waves in interaction with a dislocation, A. Maurel, V. Pagneux, F. Barra and F. Lund, Ultrasonics 50 161 (2010).
30. Reply to Comment on “Interaction of a Surface Wave with a dislocation” A. Maurel, V. Pagneux, F. Barra and F. Lund, Phys. Rev. B 80 136102 (2009).
29. Interaction between elastic waves and Prismatic Dislocation Loops, N. Rodriguez, A. Maurel, V. Pagneux, F. Barra and F. Lund, J. Appl. Phys. 106 054910 (2009).
28 Fractality of the nonequilibrium stationary states of open volume-preserving systems. II. Galton Boards, F. Barra, P. Gaspard, and T. Gilbert, Phys. Rev. E. 80 021127 (2009).
27. Fractality of the nonequilibrium stationary states of open volume-preserving systems. I. Tagged particle diffusion, F. Barra, P. Gaspard, and T. Gilbert, Phys. Rev. E. 80 021126 (2009).
26 Measuring Dislocation Density in Aluminum with Resonant Ultrasound Spectroscopy, F. Barra, A.Caru, M.T. Cerda, R. Espinoza, A. Jara, F. Lund and N. Mujica International Journal of Bifurcations and Chaos 19 3561 (2009).
25.The conductivity of the Selfsimilar Lorentz Channel. F. Barra, T. Gilbert and S. Reyes International Journal of Bifurcations and Chaos 19 2687 (2009).
24. Ultrasound as a probe for plasticity? A. Maurel, V. Pagneux, F. Barra and F. Lund, International Journal of Bifurcations and Chaos 19 2765 (2009).
23. Log-periodic drift oscillations in self-similar billiards. F. Barra, N. Chernov and T. Gilbert, Nonlinearity 20 2539 (2007).
22. Stress driven Interface dynamics: The effects of surface stress, F. Barra, International Journal of Bifurcations and Chaos 17 1721 (2007).
21. Multiple scattering from assemblies of dislocations walls in 3D. Application to propagation in polycrystals, A. Maurel, V. Pagneux, F. Barra and F. Lund, J. Acoust. Soc. Am 121 3418-3431 (2007).
20. Interaction of a surface wave with a dislocation, A. Maurel, V. Pagneux, F. Barra and F. Lund, Phys. Rev. B 75 224112 (2007).
19. Steady state conduction in selfsimilar billiards, F. Barra and T. Gilbet, Phys. Rev. Lett 98, 130601 (2007).
18. Nonequilibrium Lorentz gas on a curved space, F. Barra and T. Gilber, J. Stat. Mechs. 7 L01003 (2007).
17. Drift of particles in self-similar systems and its Liouvillian interpretation, F. Barra, T. Gilbert and M. Romo, Phys. Rev. E 73, 026211 (2006).
16. Wave propagation through a random array of pinned dislocation: Velocity change and attenuation in a generalized Granato & Lucke theory, A. Maurel, V. Pagneux, F. Barra and F. Lund, Phys. Rev. B 72, 174111 (2005).
15. Interaction between an elastic wave and a single pinned dislocation, A. Maurel, V. Pagneux, F. Barra and F. Lund, Phys. Rev. B 72, 174110 (2005).
14. Conformal dynamics of precursors to fracture, F. Barra, M. Herrera and I. Procaccia, Europhys. Lett. 63, 708 (2003);cond-mat/0212100
13. Quasi-Static brittle fracture in inhomogeneous media and iterated conformal maps: Modes I, II and III, F. Barra, A. Levermann and I. Procaccia, Phys. Rev. E 66 066122 (2002); cond-mat/0205132
12. Iterated conformal dynamics and Laplacian growth, F. Barra, B. Davidovitch and I. Procaccia, Phys. Rev. E 65 046144 (2002); cond-mat/0105608
11. Quasi-Static Fractures in Brittle Media and Iterated Conformal Maps, F. Barra, H. G. Hentschel, A. Levermann and I. Procaccia, Phys. Rev. E 65 045101 (2002); cond-mat/ 0110089
10. Algebraic decay in hierarchical graphs, F. Barra and T. Gilber J. Stat. Phys. 109, 777-801(2002).
9. Transport and dynamics on open quantum graphs, F. Barra and P. Gaspard Phys. Rev. E. 65 16205 (2002). cond-mat/0107285
8. Laplacian Growth and Diffusion limited aggregation: different universality classes, F. Barra, B. Davidovitch, A. Leverman and I. Procaccia, Phys. Rev. Let. 87 134501 (2001); cond-mat/0103126
7. Classical dynamics on graphs, F. Barra and P. Gaspard, Phys. Rev. E 63, 66215 (2001); nlin.CD/0011045
6. Nonlinear Schrodinger flow in a periodic potential, F. Barra, P. Gaspard and S. RicaPhys. Rev. E 61, 5852 (2000).
5. On the level spacing distribution in quantum graphs, F. Barra and P. Gaspard, J. Stat. Phys. 101, 283-319 (2000) quant-ph/0011099
4. Scattering in periodic systems: from resonances to band structure, F. Barra and P. Gaspard, Journal of Physics A: mathematical and general 32 3357-3375 (1999).
3. Non Variational Effects in Nonequilibrium Systems, F. Barra, O. Descalzi and E. Tirapegui, Physics Letters A, 221, 193 (1996).
2. Detailed Balance in Nonequilibrium System, F. Barra, M. Clerc and E. Tirapegui, Dynamics and Stability of Systems 12, 61 (1997).
1. Detailed Balance and Reversed Process for Macroscopic System, F. Barra, M. Clerc, C. Huepe and E. Tirapegui, in Instabilities and Nonequilibrium Structures V, Kluwer (1996).

Cursos:

Postgrado:
Primavera 2013:
FI6031: “Introducción a los procesos de transporte en sistemas cuánticos”
Horario tentativo: Martes y jueves a las 16:15pm. Primera reunión: Jueves 14 de Marzo a las 16:15pm, sala de Seminario DFI.
Programa (aprox)
C1: Introducción y repaso de nociones básicas
i-macánica cuántica
ii-mecánica clásica
iii-mecánica estadística
C2: Herramientas
i- Propagador, funciones de Green, matriz de Scattering
C3 : Transporte: Formula de Landauer
C4: Desorden e interferencia: Scattering en sistemas caóticos y modelos de matrices aleatorias.
C5: Transporte en medios extendidos
i- sistemas desordenados: Difusión y localización
ii-sistemas periódicos: Difusión y propagación balística.
C6 Interacción con medio externo:
i-Correlaciones cuánticas y decoherencia
ii-Ecuación de Lindblad.

Share in...Share on FacebookTweet about this on Twitter