Quim Casulleras i Ambros

Associate professor
Campus Nord (UPC), Edifici B4-B5, Despatx B4-207
Jordi Girona, 1-3
08034 Barcelona

Telèfon: +34 934016968
E-Mail: joaquim.casulleras

upc.edu
Web del grup de recerca: http://simcon.upc.edu/en
Web personal: https://futur.upc.edu/JoaquinCasullerasAmbros

1- Interaction effects on the itinerant ferromagnetism phase transition
Pera, J.; Casulleras, J.; Boronat, J.
Physical Review Research 7, 013167 (2025)

2- Beyond universality in repulsive SU(N) Fermi gases
Pera, J.; Casulleras, J.; Boronat, J.
SciPost physic 17, 2, article 030 (2024)

3- Itinerant ferromagnetism in dilute SU(N) Fermi gases
Pera, J.; Casulleras, J.; Boronat, J.
Scipost Physics 14, 38 (2023)

4- Quantum Monte Carlo estimation of complex-time correlations for the study of the ground-state dynamic structure function
Rota, R. ; Casulleras, J. ; Mazzanti, F. ; Boronat, J.
Journal of Chemical Physics 142, 114114 (2015)

5- Quantum Monte Carlo study of spin-polarized deuterium
Beslic, I. ; Vranjes, L. ; Casulleras, J. ; Boronat, J.
Physical Review B 88, 024507 (2013)

6- Influence of the Interaction Potential on the D¿ 1 Equation of State
Beslic, I. ; Vranjes, L. ; Casulleras, J. ; Boronat, J.
Journal of Low Temperature Physics 171, 436-442 (2013)

7- High-order time expansion path integral ground state
Rota, R. ; Casulleras, J. ; Mazzanti, F. ; Boronat, J.
Physical Review E 81, 6707-6707 (2010)

8- Ground-state properties and superfluidity of two- and quasi-two-dimensional solid He-4
Cazorla, C. ; Astrakharchik, G. ; Casulleras, J. ; Boronat, J.
Journal of Physics: Condensed Matter 22, 65402-65402 (2010)

9- "Bose-Einstein quantum statistics and the ground state of solid He-4"
Cazorla, C. ; Astrakharchik, G. ; Casulleras, J. ; Boronat, J.
New Journal of Physics 11, 013047 (2009)

10- "High order Chin actions in path integral Monte Carlo"
Sakkos, C. ; Casulleras, J. ; Boronat, J.
Journal of Chemical Physics 130, 204109 (2009)

11- "Equation of state of a weakly interacting two-dimensional Bose gas studied at zero temperature by means of quantum Monte Carlo methods"
Astrakharchik, G. ; Boronat, J. ; Casulleras, J. ; Kurbakov, I. L. ; Lozovik, Y.
Physical Review A 79, 051602 (2009)

12- "Ground-state properties of a one-dimensional system of hard rods"
Mazzanti, F. ; Astrakharchik, G. ; Boronat, J. ; Casulleras, J.
Physical Review Letters 100, 020401 (2008)

13- "Off-diagonal ground-state properties of a one-dimensional gas of Fermi hard rods"
Mazzanti, F. ; Astrakharchik, G. ; Boronat, J. ; Casulleras, J.
Physical Review A 77, 43632-43632 (2008)

14- "Weakly interacting two-dimensional system of dipoles: Limitations of the mean-field theory"
Astrakharchik, G. ; Boronat, J. ; Casulleras, J. ; Kurbakov, I. L. ; Lozovik, Y.
Physical Review A 75, 063630 (2007)

15- "Thermal effects on the microscopic properties of ⁴He drops"
Boronat, J. ; Sakkos, C. ; Sola, E. ; Casulleras, J.
Journal of Low Temperature Physics 148, 845-849 (2007)

16- "Quantized vortices in He-4 droplets: A quantum Monte Carlo study - art. no. 052507"
Sola, E. ; Casulleras, J. ; Boronat, J.
Physical Review B 76, 052507 (2007)

17- "Ground-state properties of small He-3 drops from quantum Monte carlo simulations"
Sola, E. ; Casulleras, J. ; Boronat, J.
International Journal of Modern Physics B 21, 2124-2133 (2007)

18- "Quantum Monte Carlo simulation of spin-polarized H"
Markic, L. ; Boronat, J. ; Casulleras, J.
Physical Review B 75, 064506 (2007)

19- "Ground-state energy and stability limit of 3He droplets"
Sola, E. ; Casulleras, J. ; Boronat, J.
Physical Review B 73, 092515 (2006)

20- "Equation of state of an interacting Bose gas at finite temperature: a path-integral Monte Carlo study"
Pilati, S. ; Sakkos, C. ; Boronat, J. ; Casulleras, J. ; Giiorgini, S.
Physical Review A 74, 043621 (2006)

21- "Quantum Monte Carlo study of the ground-state properties of a Fermi gas in the BCS-BEC crossover"
Giorgini, Stefano ; Astrakharchik, G. ; Boronat, J. ; Casulleras, J.
International Journal of Modern Physics B 20, 5189-5198 (2006)

22- "Quantum Monte Carlo simulation of a two-dimensional Bose gas"
Pilati, S. ; Boronat, J. ; Casulleras, J. ; Giorgini, Stefano
Physical Review A 71, 023605 (2005)

23- "Momentum distribution and condensate fraction of a fermion gas in the BCS-BEC crossover"
Astrakharchik, G. ; Boronat, J. ; Casulleras, J. ; Giorgini, Stefano
Physical Review Letters 95, 230405 (2005)

24- "Beyond the Yonks-Girardeau gas: strongly correlated regime in quais-one-dimensional Bose gases"
Astrakharchik, G. ; Boronat, J. ; Casulleras, J. ; Giorgini, Stefano
Physical Review Letters 95, 190407 (2005)

25- "Quantum Monte Carlo simulation of overpressurized liquid 4He"
Vranjes, L. ; Boronat, J. ; Casulleras, J. ; Cazorla, C.
Physical Review Letters 95, 145302 (2005)

26- "Free surface of superfluid 4He at zero temperature"
Marín, J. ; Boronat, J. ; Casulleras, J.
Physical Review B 71, 144518 (2005)

27- "Equation of state of overpressurized liquid 4He at zero temperature"
Vranjes, L. ; Boronat, J. ; Casulleras, J.
Journal of Low Temperature Physics 138, 43-48 (2005)

28- "Correlation effects in small 3He clusters"
Sola, E. ; Casulleras, J. ; Boronat, J.
Journal of Low Temperature Physics 138, 247-252 (2005)

29- "Equation of state of a Fermi gas in the BEC-BCS crossover: a quantum Monte Carlo study"
Astrakharchik, G. ; Boronat, J. ; Casulleras, J. ; Giorgini, Stefano
Physical Review Letters 93, 200404 (2004)

30- "Collective and single-particle excitations in two- and three-dimensional 3He"
Krotscheck, E. ; Boronat, J. ; Casulleras, J. ; Grau, V. ; Schorkhuber, K. ; Springer, J.
Journal of Low Temperature Physics 134, 799-804 (2004)

31- "Theoretical search for shell effects in 4He clusters"
Sola, E. ; Casulleras, J. ; Boronat, J.
Journal of Low Temperature Physics 134, 787-792 (2004)

32- "High momentum response of liquid 3He"
Mazzanti, F. ; Polls, A. ; Boronat, J. ; Casulleras, J.
Physical Review Letters 92, 085301 (2004)

33- "Higher order and infinite Trotter-number extrapolations in path integral Monte Carlo"
Brualla, L. ; Sakkos, C. ; Boronat, J. ; Casulleras, J.
Journal of Chemical Physics 121, 636-643 (2004)

34- "Effective mass of two-dimensional 3He"
Boronat, J. ; Casulleras, J. ; Grau, V. ; Krotscheck, E. ; Springer, J.
Physical Review Letters 91, 085302 (2003)

35- "H2 in the interstitial channels of nanotube bundles"
Gordillo, M. C. ; Boronat, J. ; Casulleras, J.
Physical Review B 68, 125421 (2003)

36- "A Quantum Monte Carlo Study of 4He in Carbon Nanotube Bundles"
Boronat, J. ; Gordillo, M. C. ; Casulleras, J.
Journal of Low Temperature Physics 126, 199-204 (2002)

37- "Momentum Distribution of Quantum Liquids at Finite Temperature"
Brualla, L. ; Boronat, J. ; Casulleras, J.
Journal of Low Temperature Physics 126, 1547-1552 (2002)

38- "Quadratic diffusion Monte Carlo and pure estimators for atoms"
Sarsa, A. ; Boronat, J. ; Casulleras, J.
Journal of Chemical Physics 116, 5956-5962 (2002)

39- "Zero-Temperature Equation of State of Two-Dimensional 3He"
Grau, V. ; Boronat, J. ; Casulleras, J.
Physical Review Letters 89, 045301 (2002)

40- "Superfluidity versus Bose-Einstein condensation in a Bose gas with disorder"
Astrakharchik, G. ; Boronat, J. ; Casulleras, J. ; Giorgini, Stefano
Physical Review A 66, 023603 (2002)

41- "Isotopic effects of hydrogen adsroption in carbon nanotubes"
Gordillo, M. C. ; Boronat, J. ; Casulleras, J.
Physical Review B 65, 014503 (2001)

42- "New perspectives in the application of the diffusion Monte Carlo method to the study of liquid He3"
Boronat, J. ; Casulleras, J.
International Journal of Modern Physics B 15, 1591-1600 (2001)

43- "Comparison of different three site interaction potentials for liquid acetonitrile"
Guardia, E. ; Pinzón, R. ; Casulleras, J. ; Modesto, O. ; Luque, F.
Molecular Simulation 26, 287-306 (2001)

44- "PROGRESS IN MONTE CARLO CALCULATIONS OF FERMI SYSTEMS: NORMAL LIQUID 3He"
Casulleras, J. ; Boronat, J.
Physical Review Letters 84, 3121-3124 (2000)

45- "QUASI ONE-DIMENSIONAL 4He INSIDE CARBON NANOTUBES"
Gordillo, M. C. ; Boronat, J. ; Casulleras, J.
Physical Review B 61, 878-881 (2000)

46- "FINITE H2 CONCENTRATIONS IN SUPERFLUID 4He"
Marin, J. ; Boronat, J. ; Casulleras, J.
Physica B. Condensed matter 284, 95-96 (2000)

47- "Quantum hard-spheres as a model for a homogeneus base gas"
Boronat, J. ; Casulleras, J. ; Giorgini, Stefano
Physica B. Condensed matter 284, 1-2 (2000)

48- "Zero temperature equation of state of quasi one dimensional h2"
Gordillo, M. C. ; Boronat, J. ; Casulleras, J.
Physical Review Letters 85, 2348-2351 (2000)

49- "A microscopic description of quantum fluids adsorbed in carbon nanotubes"
Gordillo, M. C. ; Boronat, J. ; Casulleras, J.
Journal of Low Temperature Physics 121, 543-548 (2000)

50- "QUANTUM MONTE CARLO STUDY OF STATIC PROPERTIES OF ONE 3HE ATOM IN SUPERFLUID 4He"
Boronat, J. ; Casulleras, J.
Physical Review B 59, 8844-8851 (1999)

51- "Graund state of a homogeneous base gas: a diffusion monte carlo study"
Giorgini, Stefano ; Boronat, J. ; Casulleras, J.
Physical Review A 60, 5129-5132 (1999)

52- "Sampling differences in quantum monte carlo: a generalized reweigleting method"
Boronat, J. ; Casulleras, J.
Computer physics communications 121-122, 466-467 (1999)

53- "ATOMIC AND MOLECULAR HYDROGEN IMPURITIES IN LIQUID 4He"
Marin, J. ; Boronat, J. ; Casulleras, J.
Journal of Low Temperature Physics 110, 205-211 (1998)

54- "DIFFUSION MONTE CARLO FOR EXCITED STATES: PHONONS AND ROTONS IN SUPERFLUID 4He"
Boronat, J. ; Casulleras, J.
Journal of Low Temperature Physics 110, 443-448 (1998)

55- "MICROSCOPIC CALCULATION OF THE PHONON-ROTON BRANCH IN SUPERFLUID 4He"
Boronat, J. ; Casulleras, J.
Europhysics letters 38, 291-296 (1997)

56- "Excited states in superpluid 4he: a monte carlo approach"
Boronat, J. ; Casulleras, J. ; Giorgini, Stefano
Czechoslovak journal of physics 46-51, 273-274 (1996)

57- "Static properties of one 3he impurity in superfluid 4he"
Casulleras, J. ; Boronat, J. ; Polls, A.
Czechoslovak journal of physics 46-51, 271-272 (1996)

58- "Vortex excitation in superfluid 4he: a diffusion monte carlo study"
Giorgini, Stefano ; Boronat, J. ; Casulleras, J.
Physical Review Letters 77, 2754-2757 (1996)

59- "Diffusion monte carlo study of two-dimensional liquid 4he"
Giorgini, Stefano ; Boronat, J. ; Casulleras, J.
Physical Review B 54, 6099-6102 (1996)

60- "Bounds for the phonon-roton dispersion in superfluid 4he"
Boronat, J. ; Casulleras, J. ; Dalfovo, F. ; Springari, S.
Physical Review B 52, 1236-1241 (1995)

61- "Unbiased estimators in quantum monte carlo methods: application to liquid 4he"
Boronat, J. ; Casulleras, J.
Physical Review B 52, 3654-3661 (1995)

62- "Monte carlo analysis for an interatomic potential for he"
Boronat, J. ; Casulleras, J.
Physical Review B 49, 8920-8930 (1994)

63- "Monte carlo calculations for liquid 4he and negative pressure"
Boronat, J. ; Casulleras, J. ; Navarro Bernal, Manuel
Physical Review B 50, 3427-3430 (1994)

64- Computer simulation of liquid methanol I: molecular dynamics on a supernode transputer array
Casulleras, J. ; Guardia, E.
Molecular Simulation 7, 155-169 (1991)

65- Computer simulation of liquid methanol ii:system size effects
Casulleras, J. ; Guardia, E.
Molecular Simulation 8, 273-283 (1991)

66- "Computer simulation of liquid methanol i:md on a supernode transputer array"
Casulleras, J. ; Guardia, E.
Molecular Simulation 7, 155-169 (1991)

67- "Su(2) - breaking effects for meson masses in lattice qcd"
Bramon, A.; Casulleras, J.
Physics Letters B 233, 429 (1989)