160 citations · 716 across the 18 of their papers we have counts for
18 papers
Quantum Impurities as Probes of Finite-Temperature Fluctuations in Two-Dimensional Bose Gases
Victor Velasco, Gabriele Spada, Giovanni Midei +2
Two-dimensional quantum gases provide a distinctive setting in which enhanced thermal fluctuations, finite-size effects, and two-body bound-state formation are intrinsically intert…
Lattice polarons with extended interactions
Enrique I. Ramírez-Juárez, Genaro Lopez-Olivera, Luis A. Peña Ardila +1
Lattice impurities have recently emerged as a platform in which polarons unveil new quantum many-body states absent in free space and can serve to probe strongly correlated matter.…
Polaronic dressing of bound states
Luis A. Peña Ardila, Arturo Camacho-Guardian
Polarons have emerged as a powerful concept across many-fields in physics to study an impurity coupled to a quantum bath. The interplay between impurity physics and the formation o…
Polarons and bipolarons in Rydberg-dressed extended Bose-Hubbard model
G. A. Domínguez-Castro, L. Santos, L. A. Peña Ardila
Impurities immersed in hard-core Bose gases offer exciting opportunities to explore polaron and bipolaron physics. We investigate the ground state properties of a single and a pair…
Alternating-domain supersolids in binary dipolar condensates
Thomas Bland, Elena Poli, Luis A. Peña Ardila +3
Two-component dipolar condensates are now experimentally producible, and we theoretically investigate the nature of supersolidity in this system. We predict the existence of a bina…
Catalyzation of supersolidity in binary dipolar condensates
D. Scheiermann, L. A. Peña Ardila, T. Bland +2
Breakthrough experiments have newly explored the fascinating physics of dipolar quantum droplets and supersolids. The recent realization of dipolar mixtures opens further intriguin…
Universal Properties of Anisotropic Dipolar Bosons in Two Dimensions
J. Sánchez-Baena, L. A. Peña Ardila, G. Astrakharchik +1
The energy of ultra-dilute quantum many-body systems is known to exhibit a universal dependence on the gas parameter , with the density, the dimensionality of th…
Finite-range effects in the unitary Fermi polaron
Renato Pessoa, S. A. Vitiello, L. A. Peña Ardila
Quantum Monte Carlo techniques are employed to study the properties of polarons in an ultracold Fermi gas, at and in the unitary regime using both a zero-range model and a…
Quantum behavior of a heavy impurity strongly coupled to a Bose gas
Jesper Levinsen, Luis A. Peña Ardila, Shuhei M. Yoshida +1
We investigate the problem of an infinitely heavy impurity interacting with a dilute Bose gas at zero temperature. When the impurity-boson interactions are short ranged, we show th…
Dynamical formation of polarons in a Bose-Einstein condensate: A variational approach
L. A. Peña Ardila
We investigate the non-equilibrium dynamics of an impurity coupled to a Bose-Einstein condensate, systematically compared with recent experimental results [M. G. Skou et al., Nat.…
Quantum droplets of dipolar mixtures
R. N. Bisset, L. A. Peña Ardila, L. Santos
Recently achieved two-component dipolar Bose-Einstein condensates open exciting possibilities for the study of mixtures of ultra-dilute quantum liquids. While non-dipolar self-boun…
Strong coupling Bose polarons in a two-dimensional gas
L. A. Peña Ardila, G. E. Astrakharchik, S. Giorgini
We study the properties of Bose polarons in two dimensions using quantum Monte Carlo techniques. Results for the binding energy, the effective mass, and the quasiparticle residue a…
Analyzing a Bose polaron across resonant interactions
L. A. Peña Ardila, N. B. Jörgensen, T. Pohl +3
Recently, two independent experiments reported the observation of long-lived polarons in a Bose-Einstein condensate, providing an excellent setting to study the generic scenario of…
Critical slowdown of non-equilibrium polaron dynamics
Kristian Knakkergaard Nielsen, Luis A. Peña Ardila, Georg M. Bruun +1
We study the quantum dynamics of a single impurity following its sudden immersion into a Bose-Einstein condensate. The ensuing formation of the Bose polaron in this general setting…
Ground-state properties of Dipolar Bose polarons
L. A. Peña Ardila, T. Pohl
We consider a quantum impurity immersed in a dipolar Bose Einstein condensate and study the properties of the emerging polaron. We calculate the energy, effective mass and quasi-pa…
Bipolarons in a Bose-Einstein Condensate
A. Camacho-Guardian, L. A. Peña Ardila, T. Pohl +1
Mobile impurities in a Bose-Einstein condensate form quasiparticles called polarons. Here, we show that two such polarons can bind to form a bound bipolaron state. Its emergence is…
Elastic constants of hcp He: Path-integral Monte Carlo results versus experiment
Luis Aldemar Peña Ardila, Silvio A. Vitiello, Maurice de Koning
The elastic constants of hcp He are computed using the path-integral Monte Carlo (PIMC) method. The stiffness coefficients are obtained by imposing different distortions to a…
Momentum-energy tensor associated to the quasiparticles in anisotropic superconductors
L. A. Peña Ardila, W. Herrera, Virgilio niño
From a Lagrangian density for the Bogoliubov de Gennes equations in anisotropic superconductors, we find the momentum-energy tensor associated to the quasiparticles of the system.…