Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Luis A. Peña Ardila"'
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-11 (2023)
Polarons are quasi-particles that emerge when impurity particle is mixed with the low-energy excitations of a medium. Here the authors study the case of atom-ion quantum mixtures and identify three separate bipolaronic regimes which can arise dependi
Externí odkaz:
https://doaj.org/article/2e90a705b04a491faf7b8a2c6ba9081a
Autor:
Grigory E. Astrakharchik, Luis A. Peña Ardila, Richard Schmidt, Krzysztof Jachymski, Antonio Negretti
Publikováno v:
Communications Physics, Vol 4, Iss 1, Pp 1-8 (2021)
An impurity introduced to a many-body quantum environment gets dressed by excitations and it is of a particular interest to understand the limits of the quasi-particle description. The authors theoretically and numerically study an ionic impurity imm
Externí odkaz:
https://doaj.org/article/4775ef0c47dc4f138ed3552ada040010
Publikováno v:
Physical Review Research, Vol 4, Iss 3, p 033017 (2022)
Buoyancy is a well-known effect in immiscible binary Bose-Einstein condensates. Depending on the differential confinement experienced by the two components, a bubble of one component sitting at the center of the other eventually floats to the surface
Externí odkaz:
https://doaj.org/article/819b14cc07694c54899050e3441eddcf
Autor:
Luis A. Peña Ardila
Publikováno v:
Atoms, Vol 10, Iss 1, p 29 (2022)
We investigate the properties of a dilute gas of impurities embedded in an ultracold gas of bosons that forms a Bose–Einstein condensate (BEC). This work focuses mainly on the equation of state (EoS) of the impurity gas at zero temperature and the
Externí odkaz:
https://doaj.org/article/a0d67dae3b2b4fb1ac08d859e077da54
Autor:
Elena Poli, Francesca Ferlaino, Luis Aldemar Peña Ardila, Thomas Bland, Luis Santos, Russell Nathan Bisset
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 binary supersolid state in which the two components form a series of alter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a59ec6283f9f00737e32454382b067ce
Autor:
Richard Schmidt, Luis A. Peña Ardila, Antonio Negretti, Grigory E. Astrakharchik, Krzysztof Jachymski
Publikováno v:
Communications Physics
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Communications Physics, Vol 4, Iss 1, Pp 1-8 (2021)
Communications Physics 4(1), 94 (2021). doi:10.1038/s42005-021-00597-1
Communications Physics 4 (2021)
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Communications Physics, Vol 4, Iss 1, Pp 1-8 (2021)
Communications Physics 4(1), 94 (2021). doi:10.1038/s42005-021-00597-1
Communications Physics 4 (2021)
The presence of strong interactions in a many-body quantum system can lead to a variety of exotic effects. Here we show that even in a comparatively simple setup consisting of a charged impurity in a weakly interacting bosonic medium the competition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4246ebe1792d1387d02d135d926f6b6
https://hdl.handle.net/21.11116/0000-0008-9FC2-A21.11116/0000-0008-9FC4-821.11116/0000-0008-9FC5-7
https://hdl.handle.net/21.11116/0000-0008-9FC2-A21.11116/0000-0008-9FC4-821.11116/0000-0008-9FC5-7
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 that boson-boson interactions induce a quantum blockade effect, where a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ab8e24d7b2c9f26376146f04f27a048
http://arxiv.org/abs/2102.06368
http://arxiv.org/abs/2102.06368
Autor:
Luis Aldemar Peña Ardila
Publikováno v:
Nature Reviews Physics. 4:214-214
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f97f81958c525716b0908bf999bb1a0
https://doi.org/10.1038/s42254-022-00443-5
https://doi.org/10.1038/s42254-022-00443-5
Publikováno v:
Nielsen, K K, Ardila, L A P, Bruun, G M & Pohl, T 2019, ' Critical slowdown of non-equilibrium polaron dynamics ', New Journal of Physics, vol. 21, 043014 . https://doi.org/10.1088/1367-2630/ab0a81
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 can be seen as impurity decoherence driven by the condensate, which w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81fa4c64e26b833986017fa020fd4067
https://pure.au.dk/ws/files/149844920/Nielsen_2019_New_J._Phys._21_043014.pdf
https://pure.au.dk/ws/files/149844920/Nielsen_2019_New_J._Phys._21_043014.pdf
Measuring the single-particle density matrix for fermions and hard-core bosons in an optical lattice
Publikováno v:
Ardila, L, Heyl, M & André, E 2018, ' Measuring the Single-Particle Density Matrix for Fermions and Hard-Core Bosons in an Optical Lattice ', Physical Review Letters, vol. 121, 121, 260401, pp. 1-6 . https://doi.org/10.1103/PhysRevLett.121.260401
Ultracold atoms in optical lattices provide clean, tunable, and well-isolated realizations of paradigmatic quantum lattice models. With the recent advent of quantum-gas microscopes, they now also offer the possibility to measure the occupations of in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::774eb4b2264ee4407851f0ed760386c1
http://arxiv.org/abs/1806.08171
http://arxiv.org/abs/1806.08171