Zobrazeno 1 - 10
of 10 031
pro vyhledávání: '"João, C"'
Autor:
Grossi, Rafael, Barata, João C. A.
We propose a generalization of the description of Bell's inequalities in algebraic quantum field theory (AQFT) to the context of locally covariant quantum field theory (LCQFT). We use the functorial formulation of the state space as proposed in the s
Externí odkaz:
http://arxiv.org/abs/2409.14930
Super-resolution algorithms often struggle with images from surveillance environments due to adverse conditions such as unknown degradation, variations in pose, irregular illumination, and occlusions. However, acquiring multiple images, even of low q
Externí odkaz:
http://arxiv.org/abs/2408.15386
Autor:
Porto, João C. P., Marinho, Lucas S., Dieguez, Pedro R., da Paz, Irismar G., Vieira, Carlos H. S.
Quantum metrology offers significant improvements in several quantum technologies. In this work, we propose a Gaussian quantum metrology protocol assisted by initial position-momentum correlations (PM). We employ a correlated Gaussian wave packet as
Externí odkaz:
http://arxiv.org/abs/2408.13060
Autor:
Zhao, Chenxiao, Yang, Lin, Henriques, João C. G., Ferri-Cortés, Mar, Catarina, Gonçalo, Pignedoli, Carlo A., Ma, Ji, Feng, Xinliang, Ruffieux, Pascal, Fernández-Rossier, Joaquín, Fasel, Roman
Haldane's seminal work established two fundamentally different types of excitation spectra for antiferromagnetic Heisenberg quantum spin chains: gapped excitations in integer-spin chains and gapless excitations in half-integer-spin chains. In finite-
Externí odkaz:
http://arxiv.org/abs/2408.10045
Autor:
Fu, Xiaoshuai, Huang, Li, Liu, Kun, Henriques, João C. G., Gao, Yixuan, Han, Xianghe, Chen, Hui, Wang, Yan, Palma, Carlos-Andres, Cheng, Zhihai, Lin, Xiao, Du, Shixuan, Ma, Ji, Fernández-Rossier, Joaquín, Feng, Xinliang, Gao, Hong-Jun
Understanding and engineering the coupling of spins in nanomaterials is of central importance for designing novel devices. Graphene nanostructures with {\pi}-magnetism offer a chemically tunable platform to explore quantum magnetic interactions. Howe
Externí odkaz:
http://arxiv.org/abs/2407.20511
Autor:
Chen, I-Chi, Getelina, João C., Pollock, Klée, Sen, Srimoyee, Yao, Yong-Xin, Iadecola, Thomas
Simulating strongly coupled gauge theories at finite temperature and density is a longstanding challenge in nuclear and high-energy physics that also has fundamental implications for condensed matter physics. In this work, we investigate the utility
Externí odkaz:
http://arxiv.org/abs/2407.11949
Wave propagation is a common occurrence in all of physics. A linear approximation provides a simpler way to describe various fields related to observable phenomena in laboratory physics as well as astronomy and cosmology, allowing us to probe gravita
Externí odkaz:
http://arxiv.org/abs/2407.04627
Autor:
Patrício, Cristiano, Barbano, Carlo Alberto, Fiandrotti, Attilio, Renzulli, Riccardo, Grangetto, Marco, Teixeira, Luis F., Neves, João C.
Contrastive Analysis (CA) regards the problem of identifying patterns in images that allow distinguishing between a background (BG) dataset (i.e. healthy subjects) and a target (TG) dataset (i.e. unhealthy subjects). Recent works on this topic rely o
Externí odkaz:
http://arxiv.org/abs/2406.00772
Autor:
Sridhar, Gautam, Vergassola, Massimo, Marques, Joao C., Orger, Michael B., Costa, Antonio Carlos, Wyart, Claire
Animals chain movements into long-lived motor strategies, exhibiting variability across scales that reflects the interplay between internal states and environmental cues. To reveal structure in such variability, we build Markov models of movement seq
Externí odkaz:
http://arxiv.org/abs/2405.17143
Autor:
Pereira, João C., Klenze, Tobias, Giampietro, Sofia, Limbeck, Markus, Spiliopoulos, Dionysios, Wolf, Felix A., Eilers, Marco, Sprenger, Christoph, Basin, David, Müller, Peter, Perrig, Adrian
We present the first formally-verified Internet router, which is part of the SCION Internet architecture. SCION routers run a cryptographic protocol for secure packet forwarding in an adversarial environment. We verify both the protocol's network-wid
Externí odkaz:
http://arxiv.org/abs/2405.06074