Zobrazeno 1 - 10
of 3 684
pro vyhledávání: '"Rakic, P"'
We present a method for engineering harmonic frequency combs (HFCs) in the terahertz spectral region. This approach involves interfacing a quantum cascade laser (QCL) with an external reflector featuring frequency-dependent reflectivity. A notable ad
Externí odkaz:
http://arxiv.org/abs/2412.00524
Near-extremal black holes are subject to large quantum effects, which modify their low-temperature thermodynamic behavior. Hitherto, these quantum effects were analyzed by separating the geometry into the near-horizon region and its exterior. It is d
Externí odkaz:
http://arxiv.org/abs/2409.16248
In the era of massive photometric surveys, we explore several approaches to estimate the masses of supermassive black holes (SMBHs) in active galactic nuclei (AGN) from optical ground-based imaging, in each case comparing to the independent SMBH mass
Externí odkaz:
http://arxiv.org/abs/2408.17275
It is already known that a simple nonlocal de Sitter gravity model, which we denote as $\sqrt{dS}$ gravity, contains an exact vacuum cosmological solution which mimics dark energy and dark matter and is in very good agreement with the standard model
Externí odkaz:
http://arxiv.org/abs/2404.05848
We study a supersolid in the context of a Gross-Pitaevskii theory with a non-local effective potential. We employ a homogenisation technique which allows us to calculate the elastic moduli, supersolid fraction and other state variables of the system.
Externí odkaz:
http://arxiv.org/abs/2403.13727
Autor:
Rakic, Marianne, Wong, Hallee E., Ortiz, Jose Javier Gonzalez, Cimini, Beth, Guttag, John, Dalca, Adrian V.
Existing learning-based solutions to medical image segmentation have two important shortcomings. First, for most new segmentation task, a new model has to be trained or fine-tuned. This requires extensive resources and machine learning expertise, and
Externí odkaz:
http://arxiv.org/abs/2401.13650
In this paper, we briefly review highlights of nonlocal de Sitter gravity based on the nonlocal term $ \sqrt{R - 2\Lambda}\ \mathcal{F}(\Box)\ \sqrt{R - 2\Lambda }$ in the Einstein-Hilbert action without matter sector. This nonlocal de Sitter gravity
Externí odkaz:
http://arxiv.org/abs/2312.16673
Biomedical image segmentation is a crucial part of both scientific research and clinical care. With enough labelled data, deep learning models can be trained to accurately automate specific biomedical image segmentation tasks. However, manually segme
Externí odkaz:
http://arxiv.org/abs/2312.07381
In this study, we present a detailed analysis of deflections in a butterfly wing utilizing digital holographic interferometry. Our methodology revolves around an off-axis lensless Fourier holographic setup, and we employ laser excitation to induce de
Externí odkaz:
http://arxiv.org/abs/2310.08214
We examine the thermodynamics of a near-extremal Kerr black hole, and demonstrate that the geometry behaves as an ordinary quantum system with a vanishingly small degeneracy at low temperatures. This is in contrast with the classical analysis, which
Externí odkaz:
http://arxiv.org/abs/2310.04532