26 citations · 75 across the 12 of their papers we have counts for
14 papers
Momentum Distribution of a mass-imbalanced three-body system across the Efimov-Unatomic transition
D. S. Rosa, R. M. Francisco, T. Frederico +2
We investigate the single-particle momentum distribution, the two-body contact and three-body tail coefficients of mass-imbalanced three-body systems at the critical dimension $D_c…
Confinement-induced unatomic trimer states in mass-imbalanced systems
Rafael M. Francisco, D. S. Rosa, T. Frederico +2
As resonantly interacting trimers of the type AAB are progressively squeezed from to , unatomic states emerge. We calculated the contacts from the high momentum tail of…
Confinement-induced unatomic trimer states
D. S. Rosa, R. M. Francisco, T. Frederico +2
The signature of an unatomic system is revealed by a continuous scale invariance that appears during a progressive dimensional squeezing of a resonantly interacting trimer. The una…
Reliability of the Born-Oppenheimer approximation in noninteger dimensions
D. S. Rosa, T. Frederico, R. M. Francisco +2
We address the question of the reliability of the Born-Oppenheimer (BO) approximation for a mass-imbalanced resonant three-body system embedded in noninteger dimensions. We address…
Discrete scaling in non-integer dimensions
Tobias frederico, Rafael Mendes Francisco, Dérick dos Santos Rosa +2
We explore the effect of a finite two-body energy in the discrete scale symmetry regime of two heavy bosonic impurities immersed in a light bosonic system. By means of the Born-Opp…
Single-particle momentum distribution of Efimov states in noninteger dimensions
D. S. Rosa, T. Frederico, G. Krein +1
We studied the single-particle momentum distribution of mass-imbalanced Efimov states embedded in noninteger dimensions. The contact parameters, which can be related to the thermod…
Two-heavy impurities immersed in squeezed light-boson systems
R. M. Francisco, D. S. Rosa, T. Frederico
We investigate the spectrum and structure of two-heavy bosonic impurities immersed in a light-boson system in D dimensions by means of the Born-Oppenheimer approximation. The fract…
D-dimensional three-body bound-state problem with zero range interactions
D. S. Rosa, T. Frederico, G Krein +1
We solved analytically the three-body mass-imbalanced problem embedded in D dimensions for zero-range resonantly interacting particles. We derived the negative energy eigenstates o…
Symmetry breaking patterns for two coupled complex scalar fields at finite temperature and in an external magnetic field
R. L. S. Farias, Rudnei O. Ramos, Dérick S. Rosa
A model of two coupled complex scalar fields is studied at finite temperature and under an external magnetic field. The results are obtained in the context of the nonperturbative m…
Efimov effect in a -dimensional Born-Oppenheimer approach
D. S. Rosa, T. Frederico, G. Krein +1
We study a three-body system, formed by two identical heavy bosons and a light particle, in the Born-Oppenheimer approximation for an arbitrary dimension . We restrict to th…
Few-body techniques using momentum space for bound and continuum states
M. T. Yamashita
These notes were written for a set of three lectures given in a school at the Max Planck Institute for the Physics of Complex Systems in October/2017 before the workshop "Critical…
Efimov effect in spatial dimensions in systems
D. S. Rosa, T. Frederico, G. Krein +1
The existence of the Efimov effect is drastically affected by the dimensionality of the space in which the system is embedded. The effective spatial dimension containing an atomic…
Bound states of a light atom and two heavy dipoles in two dimensions
D. S. Rosa, F. F. Bellotti, A. S. Jensen +2
We study a three-body system, formed by a light particle and two identical heavy dipoles, in two dimensions in the Born-Oppenheimer approximation. We present the analytic light-par…
Reliability of the optimized perturbation theory in the 0-dimensional scalar field model
Dérick S. Rosa, R. L. S. Farias, Rudnei O. Ramos
We address the reliability of the Optimized Perturbation Theory (OPT) in the context of the 0-dimensional scalar field model. The effective potential, the self-energy and th…