Información General

Afiliación
  • Investigador en Física Teórica
    Centro de Investigación en la Intersección de Física de Plasmas, Materia y Complejidad (P2mc)
    Comisión Chilena de Energía Nuclear (CCHEN)

  • Profesor Asociado Adjunto
    Facultad de Ciencias Exactas
    Universidad Andrés Bello

Dirección

Nueva Bilbao 12501, Las Condes
P2mc Oficina 208

Direcciones de correo electrónico

sergio dot davis at cchen dot cl
sergdavis at gmail dot com

Redes sociales

Twitter at sergdavis

Formación Académica

Ingeniero Físico y Licenciado en Física Aplicada.

Universidad de Santiago de Chile. Santiago, Chile, 2003.

USACH

Doctor en Física Aplicada de Materiales.

Royal Institute of Technology (KTH). Estocolmo, Suecia, 2009.

Tesis

KTH

Líneas de investigación

  • Mecánica Estadística Computacional

  • Física Estadística fuera del equilibrio

  • Inferencia Bayesiana y Teoría de Información

Apuntes

Estimación, Probabilidad e Inferencia (EPI)

Este apunte es libre bajo la licencia Creative Commons. Su versión más reciente se puede descargar de sdavis.cl/epi/epi.pdf

Otras versiones

Versión 1.00
Versión 0.99
Versión 0.98
Versión 0.97
Versión 0.96
Versión 0.95

Proyectos de software libre

SDSL

SDSL es un lenguaje de programación con objetos y clases, pero basado en operaciones de pila y con una sintaxis minimalista.
SDSL es software libre bajo la licencia GPLv2, y se puede encontrar en gitarra.cl/sdavis/sdsl

Pond

Pond es un lenguaje de programación para la exploración de datos, basado en SDSL.
Pond es software libre bajo la licencia GPLv2, y se puede encontrar en gitarra.cl/sdavis/pond

Publicaciones

Google Scholar

Mi perfil en Google Scholar

arXiv

Mis artículos en arXiv

ORCID

Mi identificador ORCID: ORCID

Manuscritos en preparación (preprints)

Artículos en revisión con preprints en arXiv
  1. Separable states on density matrices and emergent systems.
    Yasmín Navarrete, Sergio Davis.
    En revisión. Preprints

  2. Configurational density of states and melting of simple solids.
    Sergio Davis, Claudia Loyola, Joaquín Peralta.
    En revisión. arXiv

  3. A classification of nonequilibrium steady states based on temperature correlations.
    Sergio Davis.
    En revisión. arXiv

  4. Temperature fluctuations in finite systems: Application to the one-dimensional Ising chain.
    Constanza Farías, Sergio Davis.
    En revisión. arXiv

  5. A novel Bayesian approach to the computation of the configurational density of states.
    Felipe Moreno, Sergio Davis, Joaquín Peralta.
    En revisión. arXiv

  6. First-principles derivation of the q-canonical ensemble in Bayesian superstatistics.
    Sergio Davis.
    En revisión. arXiv

Publicaciones en revistas Web of Science

2022


  1. Bayesian inference of spectrometric data and validation with numerical simulations of plasma sheath diagnostics of a plasma focus discharge.
    Gonzalo Avaria, Alejandro Clausse, Sergio Davis, Cristian Pavez, Nelson Villalba, Osvaldo Cuadrado, José Moreno, H. Marcelo Ruiz, Leopoldo Soto.
    Scientific Reports 12, 15601 (2022). Journal

  2. Nonequilibrium, highly inhomogeneous melting in the microcanonical ensemble.
    Claudia Loyola, Sergio Davis, Joaquín Peralta.
    Physica A 595, 127045 (2022). Journal arXiv

  3. A portable and flexible implementation of the Wang-Landau algorithm in order to determine the density of states.
    Felipe Moreno, Joaquín Peralta, Sergio Davis.
    Computer Physics Communications 274, 108283 (2022). Journal arXiv

  4. Temperature in magnetic systems: evolution towards thermal equilibrium by spin dynamics simulation.
    Gonzalo Gutiérrez, Sergio Davis, Carlos Esparza.
    Physica A 591, 126729 (2022). Journal

  5. Fluctuating temperature outside superstatistics: thermodynamics of small systems.
    Sergio Davis.
    Physica A 589, 126665 (2022). Journal arXiv

2021


  1. Hyper-radiosensitivity in tumor cells following exposure to low dose pulsed x-rays emitted from a kilojoule plasma focus device.
    Jalaj Jain, Héctor Araya, José Moreno, Sergio Davis, Rodrigo Andaur, Biswajit Bora, Cristian Pavez, Katherine Marcelain, Leopoldo Soto.
    Journal of Applied Physics 130, 164902 (2021). Journal

  2. Multiple metastable states in an off-lattice Potts model.
    Constanza Farías, Sergio Davis.
    Physica A 581, 126215 (2021). Journal arXiv

  3. A model for defect formation in materials exposed to radiation.
    Sergio Davis, Felipe González-Cataldo, Gonzalo Gutiérrez, Gonzalo Avaria, Biswajit Bora, Jalaj Jain, José Moreno, Cristian Pavez, Leopoldo Soto.
    Matter and Radiation at Extremes 6, 015902 (2021). Journal

  4. Fluctuation theorems in q-canonical ensembles.
    Haridas Umpierrez, Sergio Davis.
    Physica A 563, 125337 (2021). Journal arXiv

  5. Microcanonical potential energy fluctuations and configurational density of states for nanoscale systems.
    Alejandra Montecinos, Claudia Loyola, Joaquín Peralta, Sergio Davis.
    Physica A 562, 125279 (2021). Journal

  6. A general statistical model for waiting times until collapse of a system.
    Vivianne Olguín-Arias, Sergio Davis, Gonzalo Gutiérrez.
    Physica A 561, 125198 (2021). Journal arXiv

2020


  1. Computational Statistical Mechanics of a confined, three-dimensional Coulomb gas.
    Sergio Davis, Jalaj Jain, Biswajit Bora.
    Physical Review E 102, 042137 (2020). Journal arXiv

  2. Conditional maximum entropy and Superstatistics.
    Sergio Davis.
    Journal of Physics A: Mathematical and Theoretical 53, 445006 (2020) Journal arXiv

  3. Solving equations of motion by using Monte Carlo Metropolis: Novel method via random paths and Maximum Caliber principle.
    Diego González, Sergio Davis, Sergio Curilef.
    Entropy 22, 916 (2020). Journal arXiv

  4. Inference of X-ray emission from a plasma focus discharge: comparison between characteristic parameters and neural network analyses.
    Luis Orellana, Gonzalo Avaria, Jorge Ardila-Rey, Sergio Davis, Roger Schurch, Cristian Pavez.
    IEEE Access 8, 79273-79286 (2020). Journal

  5. Experimental measurements of high-energy photons in X-rays pulses emitted from a hundred joules plasma focus device and its interpretations.
    Jalaj Jain, José Moreno, Sergio Davis, Biswajit Bora, Cristian Pavez, Gonzalo Avaria, Leopoldo Soto.
    Results in Physics 16, 102915 (2020). Journal

  6. On the possible distributions of temperature in nonequilibrium steady states.
    Sergio Davis.
    Journal of Physics A: Mathematical and Theoretical 53, 045004 (2020). Journal arXiv

2019


  1. Experimental evidences of more than one ions acceleration mechanisms in plasma focus device: observations and interpretations.
    Jalaj Jain, José Moreno, Sergio Davis, Biswajit Bora, Cristian Pavez, Gonzalo Avaria, Leopoldo Soto.
    Physics of Plasmas 26, 103105 (2019). Journal

  2. Single-particle velocity distributions of collisionless, steady-state plasmas must follow Superstatistics.
    Sergio Davis, Gonzalo Avaria, Biswajit Bora, Jalaj Jain, José Moreno, Cristian Pavez, Leopoldo Soto.
    Physical Review E 100, 023205 (2019). Journal arXiv

  3. Extended correlations in the critical superheated solid.
    Vivianne Olguín-Arias, Sergio Davis, Gonzalo Gutiérrez.
    Journal of Chemical Physics 151, 064507 (2019). Journal arXiv

  4. Emergence of Tsallis statistics as a consequence of invariance.
    Sergio Davis, Gonzalo Gutiérrez.
    Physica A 533, 122031 (2019). Journal arXiv

  5. Hard X-ray emission detection using deep learning analysis of the radiated UHF electromagnetic signal from a Plasma Focus discharge.
    Gonzalo Avaria, Jorge Ardila-Rey, Sergio Davis, Luis Orellana, Benjamín Cevallos, Cristian Pavez, Leopoldo Soto.
    IEEE Access 7, 74899-74908 (2019). Journal

  6. Bayesian statistical modeling of microcanonical melting times at the superheated regime.
    Sergio Davis, Claudia Loyola, Joaquín Peralta.
    Physica A 515, 546-557 (2019). Journal arXiv

2018


  1. Configurational temperature in constrained systems: the case of spin dynamics.
    Gonzalo Gutiérrez, Sergio Davis, Guillermo Palma.
    Journal of Physics A: Mathematical and Theoretical 51, 455003 (2018). Journal

  2. Probabilistic inference for dynamical systems.
    Sergio Davis, Diego González, Gonzalo Gutiérrez.
    Entropy 20, 696 (2018). Journal

  3. Ordered metastable states in the Potts model and their connection with the superheated solid state.
    Felipe Moreno, Sergio Davis, Claudia Loyola, Joaquín Peralta.
    Physica A 509, 361-368 (2018). Journal

  4. Deterministic physical systems under uncertain initial conditions: the case of maximum entropy applied to projectile motion.
    Alejandra Montecinos, Sergio Davis, Joaquín Peralta.
    European Journal of Physics 39, 045102 (2018). Journal arXiv

  5. Temperature is not an observable in superstatistics.
    Sergio Davis, Gonzalo Gutiérrez.
    Physica A 505, 864-870 (2018). Journal arXiv

2017


  1. Ti film deposition process of a plasma focus: Study by an experimental design.
    María José Inestrosa-Izurieta, José Moreno, Sergio Davis, Leopoldo Soto.
    AIP Advances 7, 105026 (2017). Journal

  2. Hundred joules plasma focus device as a potential pulsed source for in vitro cancer cell irradiation.
    Jalaj Jain, José Moreno, Rodrigo Andaur, Ricardo Armisen, Diana Morales, Katherine Marcelain, Gonzalo Avaria, Biswajit Bora, Sergio Davis, Cristian Pavez, Leopoldo Soto.
    AIP Advances 7, 85121 (2017). Journal

  3. Microcanonical molecular dynamics simulation of the vitreous phase transition of poly(binaphthylphosphazene).
    V.D. Samith, A. R. Ruíz-Fernández, V. E. Bahamondes-Padilla, D. Muñoz-Gacitúa, E. Ramos-Moore, Sergio Davis.
    Journal of Non-Crystalline Solids 460, 90-97 (2017). Journal

  4. Stabilization of body-centred cubic iron under inner-core conditions.
    Anatoly B. Belonoshko, Tymofiy Lukinov, Jie Fu, Jijun Zhao, Sergio Davis, Sergei I. Simak.
    Nature Geoscience 10, 312-316 (2017). Journal

  5. Observation and interpretation of neutron origin prior to hard X rays and pinch in a hundred joules plasma focus device.
    Jalaj Jain, José Moreno, Diana Morales, Sergio Davis, Biswajit Bora, Gonzalo Avaria, María José Inestrosa-Izurieta, Leopoldo Soto.
    Laser and Particle Beams 35, 656-662 (2017). Journal

2016


  1. Ensemble-free configurational temperature for spin systems.
    Guillermo Palma, Gonzalo Gutiérrez, Sergio Davis.
    Physical Review E 94, 62113 (2016). Journal arXiv

  2. A Bayesian Interpretation of First-Order Phase Transitions.
    Sergio Davis, Joaquín Peralta, Yasmín Navarrete, Diego González, Gonzalo Gutiérrez.
    Foundations of Physics 46, 350-359 (2016). Journal arXiv

  3. Continuity equation for probability as a requirement of inference over paths.
    Diego González, Daniela Díaz, Sergio Davis.
    European Physical Journal B 89, 214 (2016). Journal arXiv

  4. Melting curve of SiO2 at multimegabar pressures: implications for gas giants and super-Earths.
    Felipe González-Cataldo, Sergio Davis, Gonzalo Gutiérrez.
    Scientific Reports 6, 26537 (2016). Journal

2015


  1. Statistical distribution of thermal vacancies close to the melting point.
    María José Pozo, Sergio Davis, Joaquín Peralta.
    Physica B 457, 310-313 (2015). Journal arXiv

  2. Hamiltonian formalism and path entropy maximization.
    Sergio Davis, Diego González.
    Journal of Physics A: Mathematical and Theoretical 48, 425003 (2015). Journal arXiv

  3. A GPU enhanced approach to identify atomic vacancies in solid materials.
    Joaquín Peralta, Claudia Loyola, Sergio Davis.
    Computer Physics Communications 193, 66-71 (2015). Journal

2014


  1. Fitting of interatomic potentials without forces: a parallel particle swarm optimization algorithm.
    Diego González, Sergio Davis.
    Computer Physics Communications 185, 3090-3093 (2014). Journal arXiv

  2. Newtonian Dynamics from the Principle of Maximum Caliber.
    Diego González, Sergio Davis, Gonzalo Gutiérrez.
    Foundations of Physics 44, 923-931 (2014). Journal arXiv

  3. A maximum entropy model for opinions in social groups.
    Sergio Davis, Yasmín Navarrete, Gonzalo Gutiérrez.
    European Physical Journal B 87, 78 (2014). Journal arXiv

2013


  1. Hypervelocity impact of copper nano-projectiles on copper.
    Nicolás Amigo, Claudia Loyola, Sergio Davis, Gonzalo Gutiérrez.
    Computational Materials Science 68, 245-254 (2013). Journal

  2. Bayesian inference as a tool for analysis of first-principles calculations of complex materials: an application to the melting point of Ti2GaN.
    Sergio Davis, Gonzalo Gutiérrez.
    Modelling and Simulation in Materials Science and Engineering 21, 75001 (2013). Journal

2012


  1. Conjugate variables in continuous maximum-entropy inference.
    Sergio Davis, Gonzalo Gutiérrez.
    Physical Review E 86, 051136 (2012). Journal

2011


  1. Calculation of microcanonical entropy differences from configurational averages.
    Sergio Davis.
    Physical Review E 84, 50101 (2011). Journal

  2. Structural, elastic, vibrational and electronic properties of amorphous Al2O3 from ab initio calculations.
    Sergio Davis, Gonzalo Gutiérrez.
    Journal of Physics: Condensed Matter 23, 495401 (2011). Journal

  3. Model for diffusion at the microcanonical superheating limit from atomistic computer simulations.
    Sergio Davis, Anatoly B. Belonoshko, Börje Johansson, Anders Rosengren.
    Physical Review B 84, 64102 (2011). Journal

  4. SearchFill: A stochastic optimization code for detecting atomic vacancies in crystalline and non-crystalline systems.
    Sergio Davis, Anatoly B. Belonoshko, Börje Johansson.
    Computer Physics Communications 182, 1105-1110 (2011). Journal

2010


  1. Las Palmeras Molecular Dynamics: A flexible and modular molecular dynamics code.
    Sergio Davis, Claudia Loyola, Felipe González-Cataldo, Joaquín Peralta.
    Computer Physics Communications 181, 2126-2139 (2010). Journal

  2. Computer simulation study of amorphous compounds: structural and vibrational properties.
    Gonzalo Gutiérrez, Eduardo Menéndez-Proupin, Claudia Loyola, Joaquín Peralta, Sergio Davis.
    Journal of Materials Science 45, 5124-5134 (2010). Journal

  3. Onset of failure in argon by the effect of a shockwave: A molecular dynamics study.
    Claudia Loyola, Sergio Davis, Joaquín Peralta, Gonzalo Gutiérrez.
    Computational Materials Science 49, 582-587 (2010). Journal

2009


  1. Molecular dynamics simulation of zirconia melting.
    Sergio Davis, Anatoly B. Belonoshko, Anders Rosengren, Adri C T van Duin, Börje Johansson.
    Central European Journal of Physics 8, 789-797 (2009). Journal

2008


  1. High-pressure melting curve of hydrogen.
    Sergio Davis, Anatoly B. Belonoshko, Börje Johansson, Natalia V. Skorodumova, Adri C T van Duin.
    Journal of Chemical Physics 129, 194508 (2008). Journal

2007


  1. Properties of the fcc Lennard-Jones crystal model at the limit of superheating.
    Anatoly B. Belonoshko, Sergio Davis, Natalia V. Skorodumova, P H Lundow, Anders Rosengren, Börje Johansson.
    Physical Review B 76, 64121 (2007). Journal

  2. Origin of the low rigidity of the Earth’s inner core.
    Anatoly B. Belonoshko, Natalia V. Skorodumova, Sergio Davis, Alexander N. Osiptsov, Anders Rosengren, Börje Johansson.
    Science 316, 1603-1605 (2007). Journal

2006


  1. Xenon melting: Density functional theory versus diamond anvil cell experiments.
    Anatoly B. Belonoshko, Sergio Davis, Anders Rosengren, Rajeev Ahuja, Börje Johansson, Sergei I. Simak, Leonid Burakovsky, Dean L Preston.
    Physical Review B 74, 54114 (2006). Journal

  2. Solitonic elliptical solutions in the classical XY-model.
    Rodrigo Ferrer, José Rogan, Sergio Davis, Gonzalo Gutiérrez.
    Physica B 384, 236-238 (2006). Journal

2005


  1. Dynamic properties of a classical anisotropic Heisenberg chain under external magnetic field.
    Sergio Davis, Gonzalo Gutiérrez.
    Physica B 355, 1-8 (2005). Journal

Publicaciones en revistas SCOPUS

2021


  1. Statistical approaches to the problem of homogeneous melting of solids in the microcanonical ensemble.
    Vivianne Olguín-Arias, Sergio Davis, Gonzalo Gutiérrez.
    Journal of Physics: Conference Series 2090, 012032 (2021). Journal

2019


  1. Temporal evolution of the velocity distribution in systems described by the Vlasov equation; Radiation belts: analytical and computational results.
    Abiam Tamburrini C., Iván Gallo-Méndez, Sergio Davis, Pablo S. Moya.
    Proceedings IAU 15, 367-370 (2019). Journal

2018


  1. Implications of Superstatistics for stationary plasmas.
    Sergio Davis, Jalaj Jain, Diego González, Gonzalo Gutiérrez.
    Journal of Physics: Conference Series 1043, 012011 (2018). Journal

  2. Analysis of deterioration in a plasma focus device.
    Daniel Zanelli, Enrique López, Cristian Pavez, José Pedreros, Jalaj Jain, Gonzalo Avaria, José Moreno, Biswajit Bora, Sergio Davis, Leopoldo Soto.
    Journal of Physics: Conference Series 1043, 012049 (2018). Journal

  3. Pulsed x-rays dose measurements from a hundred joules plasma focus device.
    Jalaj Jain, José Moreno, R. E. Ávila, Gonzalo Avaria, Cristian Pavez, Biswajit Bora, Sergio Davis, Leopoldo Soto.
    Journal of Physics: Conference Series 1043, 012048 (2018). Journal

  4. In vitro irradiation of colorectal cancer cells by pulsed radiation emitted from a hundred joules plasma focus device and its comparison with continuous irradiation.
    Jalaj Jain, José Moreno, Rodrigo Andaur, Ricardo Armisen, Gonzalo Avaria, Biswajit Bora, Sergio Davis, Cristian Pavez, Katherine Marcelain, Leopoldo Soto.
    Journal of Physics: Conference Series 1043, 012047 (2018). Journal

  5. Expectation values of general observables in the Vlasov formalism.
    Diego González, Abiam Tamburrini, Sergio Davis, Jalaj Jain, Gonzalo Gutiérrez.
    Journal of Physics: Conference Series 1043, 012008 (2018). Journal

2017


  1. A method for density estimation based on expectation identities.
    Joaquín Peralta, Claudia Loyola, Humberto Loguercio, Sergio Davis.
    AIP Conference Proceedings 1853, 110001 (2017). Journal

  2. Jarzynski equality in the context of maximum path entropy.
    Diego González, Sergio Davis.
    AIP Conference Proceedings 1853, 80003 (2017). Journal arXiv

  3. Electrical and optical characterization of the plasma needle for use in biomedical applications.
    Biswajit Bora, A. Aguilera, José Moreno, Jalaj Jain, Cristian Pavez, Gonzalo Avaria, María José Inestrosa-Izurieta, Sergio Davis, Leopoldo Soto.
    Plasma Medicine 7, 417-425 (2017). Journal

2016


  1. Functional identities in superstatistics.
    Humberto Loguercio, Diego González, Sergio Davis.
    AIP Conference Proceedings 1757, 60009 (2016). Journal

  2. Liouville’s Theorem from the Principle of Maximum Caliber in Phase Space.
    Diego González, Sergio Davis.
    AIP Conference Proceedings 1757, 20003 (2016). Journal arXiv

  3. Applications of the divergence theorem in Bayesian inference and MaxEnt.
    Sergio Davis, Gonzalo Gutiérrez.
    AIP Conference Proceedings 1757, 20002 (2016). Journal arXiv

  4. Inverse temperature in Superstatistics.
    Humberto Loguercio, Sergio Davis.
    Journal of Physics: Conference Series 720, 12007 (2016). Journal

  5. Temperature estimators in computer simulation.
    César Jara, Felipe González-Cataldo, Sergio Davis, Gonzalo Gutiérrez.
    Journal of Physics: Conference Series 720, 12003 (2016). Journal

  6. Z method calculations to determine the melting curve of silica at high pressures.
    Felipe González-Cataldo, Sergio Davis, Gonzalo Gutiérrez.
    Journal of Physics: Conference Series 720, 12032 (2016). Journal

  7. The Maximum Caliber principle applied to continuous systems.
    Diego González, Sergio Davis.
    Journal of Physics: Conference Series 720, 12006 (2016). Journal

2013


  1. Estimation of Tsallis' q-index in non-extensive systems.
    Sergio Davis, Gonzalo Gutiérrez.
    AIP Conference Proceedings 1779, 1779-1783 (2013). Journal

  2. Maximum entropy reconstruction of the configurational density of states from microcanonical simulations.
    Sergio Davis.
    Journal of Physics: Conference Series 410, 12161 (2013). Journal

Proyectos financiados

Proyecto

Número

Período

Rol

Título

FONDECYT Regular

1220651

2022-2025

Investigador Principal

Bayesian Statistical Mechanics: Theory and Computational tools for Nonequilibrium Systems with Long-Range Interactions

FONDECYT Regular

1190677

2019-2022

Coinvestigador [1]

Experimental characterization of pulsed radiations and particles generated by low and very low energy plasma focus devices and study of their effects on matter

Anillo

ACT-172101

2018-2020

Investigador Titular

Plasma Physics And Pulsed Power For Energy And Life. Effects And Applications In Living Matter And Materials

FONDECYT Regular

1140514

2014-2017

Investigador Principal

First-order phase transitions and metastable states from the point of view of computational statistical mechanics

FONDECYT Regular

1171127

2017-2020

Coinvestigador [2]

Maximum entropy and maximum caliber principles in Computational Statistical Mechanics: from fundamentals to applications

FONDECYT Postdoc

3110017

2011-2012

Investigador Principal

Study of melting of solids using atomistic computer simulation techniques


1. Investigador Principal: Dr. José Moreno Martínez
2. Investigador Principal: Dr. Gonzalo Gutiérrez Gallardo