21 citations · 115 across the 10 of their papers we have counts for
10 papers
Tailoring bistability in optical tweezers with vortex beams and spherical aberration
Arthur Luna da Fonseca, Kainã Diniz, Paula Borges Monteiro +7
We demonstrate a bistable optical trap by tightly focusing a vortex laser beam. The optical potential has the form of a Mexican hat with an additional minimum at the center. The bi…
Taming a Maxwell's demon for experimental stochastic resetting
Rémi Goerlich, Minghao Li, Luís Barbosa Pires +3
A diffusive process that is reset to its origin at random times, so-called stochastic resetting (SR), is an ubiquitous expedient in many natural systems . Yet, beyond its ability t…
Optimal time-entropy bounds and speed limits for Brownian thermal shortcuts
Luís Barbosa Pires, Rémi Goerlich, Arthur Luna da Fonseca +4
By controlling in real-time the variance of the radiation pressure exerted on an optically trapped microsphere, we engineer temperature protocols that shortcut thermal relaxation w…
Harvesting information to control non-equilibrium states of active matter
Rémi Goerlich, Luís Barbosa Pires, Giovanni Manfredi +2
We propose to use a correlated noise bath to drive an optically trapped Brownian particle that mimics active biological matter. Thanks to the flexibility and precision of our setup…
Time-dependent quantum harmonic oscillator: a continuous route from adiabatic to sudden changes
D. Martínez-Tibaduiza, L. Pires, C. Farina
In this work, we provide an answer to the question: how sudden or adiabatic is a change in the frequency of a quantum harmonic oscillator (HO)? To do this, we investigate the behav…
A time-dependent harmonic oscillator with two frequency jumps: an exact algebraic solution
D. M. Tibaduiza, L. Pires, A. L. C. Rego +3
We consider a harmonic oscillator (HO) with a time dependent frequency which undergoes two successive abrupt changes. By assumption, the HO starts in its fundamental state with fre…
Efficient algebraic solution for a time-dependent quantum harmonic oscillator
D. M. Tibaduiza, L. B. Pires, D. Szilard +3
Using operator ordering techniques based on BCH-like relations of the su(1,1) Lie algebra and a time-splitting approach,we present an alternative method of solving the dynamics of…
The initial value formulation of the -R model
Luis Pires
We apply the conformal method to solve the initial value formulation of general relativity to the -R model, a minimal, anisotropic modification of general relativity with a pref…
Spherically symmetric solutions of the -R model
Renate Loll, Luis Pires
We derive spherically symmetric solutions of the classical λ-R model, a minimal, anisotropic modification of general relativity with a preferred foliation and two local degrees of…
More on "Little Lambda" in Hořava-Lifshitz Gravity
R. Loll, L. Pires
We analyze different claims on the role of the coupling constant lambda in so-called lambda-R models, a minimal generalization of general relativity inspired by Horava-Lifshitz gra…