Zobrazeno 1 - 10
of 7 160
pro vyhledávání: '"Espindola, A. A."'
According to Albert Einstein, gravitation is analogous to an optical medium. Building on this idea, various definitions of the gradient-index (GRIN) medium representing curved spacetime have been proposed; often, these approaches demand advanced know
Externí odkaz:
http://arxiv.org/abs/2412.14609
Coupled oscillator networks often display transitions between qualitatively different phase-locked solutions -- such as synchrony and rotating wave solutions -- following perturbation or parameter variation. In the limit of weak coupling, these trans
Externí odkaz:
http://arxiv.org/abs/2402.16471
Autor:
Espíndola, Christian, Kanalas, Kristóf
We give a detailed and self-contained introduction to the theory of $\lambda $-toposes and prove the following: 1) A $\lambda $-separable $\lambda $-topos (one whose defining site has a certain smallness property) has enough $\lambda $-points. 2) Giv
Externí odkaz:
http://arxiv.org/abs/2312.12356
Autor:
Espindola, Eduardo, Tang, Yu
Attitude tracking on the unit sphere of dimension $3$ based on sliding mode is considered in this paper. The tangent bundle of Lagrangian dynamics that describes the rotational motion of a rigid body is first shown to be a Lie group, and then a slidi
Externí odkaz:
http://arxiv.org/abs/2309.00721
We propose a new information transfer protocol for de Sitter space, using black holes as energy reservoirs. We consider antipodal observers in pure de Sitter space in the Bunch-Davis state. They can store Hawking modes from the cosmological horizon i
Externí odkaz:
http://arxiv.org/abs/2308.13516
This letter explores a transition in the type of von Neumann algebra for asymptotically AdS spacetimes from the implementations of the different gravitational constraints. We denote it as the \emph{centaur-algebra} of observables. In the first part o
Externí odkaz:
http://arxiv.org/abs/2307.04233
Autor:
Espindola, Eduardo, Tang, Yu
This paper presents a generalization of conventional sliding mode control designs for systems in Euclidean spaces to fully actuated simple mechanical systems whose configuration space is a Lie group for the trajectory-tracking problem. A generic kine
Externí odkaz:
http://arxiv.org/abs/2305.19530
Autor:
Czech, Bartlomiej, de Boer, Jan, Espíndola, Ricardo, Najian, Bahman, van der Heijden, Jeremy, Zukowski, Claire
We present a new perspective on bulk reconstruction using Berry phases in the boundary CFT. Our parallel transport of modular Hamiltonians is associated to a trajectory in the space of states, which we obtain from the insertion of a source in the Euc
Externí odkaz:
http://arxiv.org/abs/2305.16384
We study parametric inference on a rich class of hazard regression models in the presence of right-censoring. Previous literature has reported some inferential challenges, such as multimodal or flat likelihood surfaces, in this class of models for so
Externí odkaz:
http://arxiv.org/abs/2305.05641
Publikováno v:
Geriatrics, Gerontology and Aging, Vol 13, Pp 211-218 (2024)
INTRODUCTION: Prognostic scores are crucial to avoid unnecessary measures in palliative care, although their use in noncancer patients undergoing home care in low-income countries lacks evidence. OBJECTIVE: To compare the accuracy of the survival pre
Externí odkaz:
https://doaj.org/article/af33bb28669c4305951fb5718ab3da86
