My research work deals with the development of stochastic numerical tools for quantum many-body problems and their application to the study of a wealth of quantum systems with quantum macroscopic behavior. I have been working in the study of strongly interacting systems such as liquid and solid Helium and Hydrogen in different geometries and both at finite and zero temperature. In the last years, I have also been active in the microscopic description of dilute Bose and Fermi gases trying to go beyond of the standard mean-field theory used predominantly in the field.
18-
Phase separation in binary Bose mixtures at finite temperatureSpada, G.; Parisi, L.; Pascual, G.; Parker, N.; Billam, T.; Pilati, S.; Boronat, J.; Giorgini, StefanoScipost physics
15, 4, article 171 (2023)
21-
Excitonic insulator to superconductor phase transition in ultra-compressed heliumLiu, C.; Errea, I.; Ding, C.; Pickard, C.; Conway, L.; Monserrat, B.; Fang, Y.; Lu, Q.; Sun, J.; Boronat, J.; Cazorla, C.Nature communications
14, 4458 (2023)
43-
Dilute dipolar quantum droplets beyond the extended Gross-Pitaevskii equationBötcher, F. ; Wenzel, M. ; Schmidt, J. ; Guo, M. ; Langen, T. ; Ferrier-Barbut, I. ; Pfau, T. ; Bombin, R. ; Sánchez, J. ; Boronat, J. ; Mazzanti, F.Physical Review Research
1, 033088 (2019)
94-
H-2 physisorbed on graphaneCarbonell-Coronado, C. ; De Soto, F. ; Cazorla, C. ; Boronat, J. ; Gordillo, M. C.Journal of Low Temperature Physics
171, 619-625 (2013)
103- "Ground state properties and excitation spectrum of a two dimensional gas of bosonic dipoles"
Macia, A. ; Mazzanti, F. ; Boronat, J.
European Physical Journal D 66, 301 (2012)
113- "Microscopic description of anisotropic low-density dipolar Bose gases in two dimensions"
Macia, A. ; Mazzanti, F. ; Boronat, J. ; Zillich, R.
Physical Review A 84, 033625 (2011)
129- "Quantum Fluids in Nanotubes: A Quantum Monte Carlo Approach"
Gordillo, M. C. ; Boronat, J.
Journal of Low Temperature Physics 157, 296-323 (2009)
130- "Thermal and quantum fluctuations in chains of ultracold polar molecules"
Boronat, J. ; Astrakharchik, G. ; Chiara, D. ; Morigi, G.
Journal of physics B. Atomic molecular and optical physics 42, 154026 (2009)
131- "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)
132- "High order Chin actions in path integral Monte Carlo"
Sakkos, C. ; Casulleras, J. ; Boronat, J.
Journal of Chemical Physics 130, 204109 (2009)
133- "Dynamics of a Two-Dimensional System of Quantum Dipoles"
Mazzanti, F. ; Zillich, R. ; Astrakharchik, G. ; Boronat, J.
Physical Review Letters 102, 110405 (2009)
134- "He4 on a Single Graphene Sheet"
Gordillo, M. C. ; Boronat, J.
Physical Review Letters 102, 085303 (2009)
135- "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)
138- "Ground state of low-dimensional dipolar gases: Linear and zigzag chains"
Astrakharchik, G. ; Morigi, G. ; Chiara, D. ; Boronat, J.
Physical Review A 78, 063622 (2008)
139- "Static structure factor and static response function of superfluid helium 4: A comparative analysis"
Caupin, F. ; Boronat, J. ; Andersen, K.
Journal of Low Temperature Physics 152, 108-121 (2008)
140- "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)
141- "Quantum Monte Carlo study of small pure and mixed spin-polarized tritium clusters"
Markic, L. ; Beslic, I. ; Boronat, J.
Journal of Chemical Physics 128, 64302-64302 (2008)
142- "Atomic kinetic energy, momentum distribution, and structure of solid neon at zero temperature"
Cazorla, C. ; Boronat, J.
Physical Review B 77, 24310-24310 (2008)
143- "Zero-temperature equation of state of solid He-4 at low and high pressures"
Cazorla, C. ; Boronat, J.
Journal of Physics: Condensed Matter 20, 15223-15223 (2008)
144- "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)
145- "Strong correlation effects in 2D Bose-Einstein condensed dipolar excitons"
Lozovik, Y. ; Kurbakov, I. L. ; Astrakharchik, G. ; Boronat, J. ; Will;er, M.
Solid State Communications 144, 399-404 (2007)
146- "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)
147- "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)
148- "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)
149- "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)
150- "Quantum phase transition in a two-dimensional system of dipoles"
Astrakharchik, G. ; Boronat, J. ; Kurbakov, I. L. ; Lozovik, Y.
Physical Review Letters 98, 060405 (2007)
151- "Quantum Monte Carlo simulation of spin-polarized H"
Markic, L. ; Boronat, J. ; Casulleras, J.
Physical Review B 75, 064506 (2007)
152- "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)
153- "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)
154- "Superfluidity versus localization in bulk 4He at zero temperature"
Cazorla, C. ; Boronat, J.
Physical Review B 73, 224515 (2006)
155- "Ground-state energy and stability limit of 3He droplets"
Sola, E. ; Casulleras, J. ; Boronat, J.
Physical Review B 73, 092515 (2006)
156- "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)
157- "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)
158- "Quantum Monte Carlo simulation of overpressurized liquid 4He"
Vranjes, L. ; Boronat, J. ; Casulleras, J. ; Cazorla, C.
Physical Review Letters 95, 145302 (2005)
159- "Isotope effects in solid LiH and LiD at very low temperature"
Cazorla, C. ; Boronat, J.
Journal of Low Temperature Physics 139, 645-650 (2005)
160- "Free surface of superfluid 4He at zero temperature"
Marín, J. ; Boronat, J. ; Casulleras, J.
Physical Review B 71, 144518 (2005)
161- "Quantum Monte Carlo simulation of a two-dimensional Bose gas"
Pilati, S. ; Boronat, J. ; Casulleras, J. ; Giorgini, Stefano
Physical Review A 71, 023605 (2005)
162- "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)
163- "Correlation effects in small 3He clusters"
Sola, E. ; Casulleras, J. ; Boronat, J.
Journal of Low Temperature Physics 138, 247-252 (2005)
164- "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)
165- "Quantum hydrogen vibrational dynamics in LiH: Neutron-scattering measurements and variational Monte Carlo simulations"
Boronat, J. ; Cazorla, C. ; Colognesi, D. ; Zoppi, M.
Physical Review B 69, 174302 (2004)
166- "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)
167- "High momentum response of liquid 3He"
Mazzanti, F. ; Polls, A. ; Boronat, J. ; Casulleras, J.
Physical Review Letters 92, 085301 (2004)
168- "Quantum Monte Carlo study of two-dimensional H2 on a Rb substrate"
Cazorla, C. ; Boronat, J.
Journal of Low Temperature Physics 134, 43-48 (2004)
169- "Theoretical search for shell effects in 4He clusters"
Sola, E. ; Casulleras, J. ; Boronat, J.
Journal of Low Temperature Physics 134, 787-792 (2004)
170- "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)
171- "H2 in the interstitial channels of nanotube bundles"
Gordillo, M. C. ; Boronat, J. ; Casulleras, J.
Physical Review B 68, 125421 (2003)
172- "Effective mass of two-dimensional 3He"
Boronat, J. ; Casulleras, J. ; Grau, V. ; Krotscheck, E. ; Springer, J.
Physical Review Letters 91, 085302 (2003)
173- "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)
174- "Zero-Temperature Equation of State of Two-Dimensional 3He"
Grau, V. ; Boronat, J. ; Casulleras, J.
Physical Review Letters 89, 045301 (2002)
175- "Quadratic diffusion Monte Carlo and pure estimators for atoms"
Sarsa, A. ; Boronat, J. ; Casulleras, J.
Journal of Chemical Physics 116, 5956-5962 (2002)
176- "Momentum Distribution of Quantum Liquids at Finite Temperature"
Brualla, L. ; Boronat, J. ; Casulleras, J.
Journal of Low Temperature Physics 126, 1547-1552 (2002)
177- "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)
178- "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)
179- "Isotopic effects of hydrogen adsroption in carbon nanotubes"
Gordillo, M. C. ; Boronat, J. ; Casulleras, J.
Physical Review B 65, 014503 (2001)
180- "High-momentum dynamic structure function of liquid 3He-4He mixtures: a microscopic approach"
Mazzanti, F. ; Polls, A. ; Boronat, J.
Physical Review B 63, 054521 (2001)
181- "Mecanica cuantica de los condensados de Bose-Einstein"
Polls, A. ; Boronat, J. ; Mazzanti, F.
Investigación y ciencia , 66-74 (2001)
182- "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)
183- "Zero temperature equation of state of quasi one dimensional h2"
Gordillo, M. C. ; Boronat, J. ; Casulleras, J.
Physical Review Letters 85, 2348-2351 (2000)
184- "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)
185- "FINITE H2 CONCENTRATIONS IN SUPERFLUID 4He"
Marin, J. ; Boronat, J. ; Casulleras, J.
Physica B. Condensed matter 284, 95-96 (2000)
186- "QUASI ONE-DIMENSIONAL 4He INSIDE CARBON NANOTUBES"
Gordillo, M. C. ; Boronat, J. ; Casulleras, J.
Physical Review B 61, 878-881 (2000)
187- "PROGRESS IN MONTE CARLO CALCULATIONS OF FERMI SYSTEMS: NORMAL LIQUID 3He"
Casulleras, J. ; Boronat, J.
Physical Review Letters 84, 3121-3124 (2000)
188- "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)
189- "Sampling differences in quantum monte carlo: a generalized reweigleting method"
Boronat, J. ; Casulleras, J.
Computer physics communications 121-122, 466-467 (1999)
190- "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)
191- "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)
192- "ATOMIC AND MOLECULAR HYDROGEN IMPURITIES IN LIQUID 4He"
Marin, J. ; Boronat, J. ; Casulleras, J.
Journal of Low Temperature Physics 110, 205-211 (1998)
193- "Momentum distributions in 3He-4He mixtures"
Boronat, J. ; Polls, A. ; Fabrocini, A.
Physical Review B 56, 11854-11864 (1997)
194- "MICROSCOPIC CALCULATION OF THE PHONON-ROTON BRANCH IN SUPERFLUID 4He"
Boronat, J. ; Casulleras, J.
Europhysics letters 38, 291-296 (1997)
195- "Coherent and incoherent dynamic structure functions of the free fermi gas"
Mazzanti, F. ; Polls, A. ; Boronat, J.
Physics Letters A 220, 251-257 (1996)
196- "Diffusion monte carlo study of two-dimensional liquid 4he"
Giorgini, Stefano ; Boronat, J. ; Casulleras, J.
Physical Review B 54, 6099-6102 (1996)
197- "Vortex excitation in superfluid 4he: a diffusion monte carlo study"
Giorgini, Stefano ; Boronat, J. ; Casulleras, J.
Physical Review Letters 77, 2754-2757 (1996)
198- "Static properties of one 3he impurity in superfluid 4he"
Casulleras, J. ; Boronat, J. ; Polls, A.
Czechoslovak journal of physics 46-51, 271-272 (1996)
199- "Excited states in superpluid 4he: a monte carlo approach"
Boronat, J. ; Casulleras, J. ; Giorgini, Stefano
Czechoslovak journal of physics 46-51, 273-274 (1996)
200- "Final-state efects on superfluid 4he in the deep inelastic regime"
Mazzanti, F. ; Boronat, J. ; Polls, A.
Physical Review B 53, 5661-5669 (1996)
201- "Unbiased estimators in quantum monte carlo methods: application to liquid 4he"
Boronat, J. ; Casulleras, J.
Physical Review B 52, 3654-3661 (1995)
202- "Bounds for the phonon-roton dispersion in superfluid 4he"
Boronat, J. ; Casulleras, J. ; Dalfovo, F. ; Springari, S.
Physical Review B 52, 1236-1241 (1995)
203- "Monte carlo calculations for liquid 4he and negative pressure"
Boronat, J. ; Casulleras, J. ; Navarro Bernal, Manuel
Physical Review B 50, 3427-3430 (1994)
204- "Effective mass of one 4he atom in liquid 3he"
Saavedra, F. ; Boronat, J. ; Polls, A. ; Fabrocini, A.
Physical Review B 50, 4248-4251 (1994)
205- "Dynamic structure funcion in 3he-4he mixtures"
Boronat, J. ; Dalfovo, F. ; Mazzanti, F. ; Polls, A.
Physica B. Condensed matter 194-96, 859-860 (1994)
206- "Monte carlo analysis for an interatomic potential for he"
Boronat, J. ; Casulleras, J.
Physical Review B 49, 8920-8930 (1994)
207- "Binding energy of one "
Boronat, J. ; Saavedra, F. ; Buendia, E. ; Polls, A.
Journal of Low Temperature Physics 94, 325-349 (1994)
208- "Charge ordering and size effects in the structure of a model 2:1 ionic compound"
Boronat, J. ; Silbert, M.
Physics and Chemistry of Liquids 27, 123-135 (1994)
209- "DYNAMIC STRUCTURE FUNCTION IN 3He-4He MIXTURES"
Boronat, J.
Physical Review B 48, 7409-7418 (1993)
210- "STRUCTURE PROPERTIES OF THE 3He-4He MIXTURES AT T=0K"
Boronat, J.
Journal of Low Temperature Physics 91, 275-297 (1993)