Zobrazeno 1 - 10
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pro vyhledávání: '"Santos, A. P. R."'
We consider the $k$-dispersion generalized Benjamin-Ono ($k$-DGBO) equations. For nonlinearities with power $k \geq 4$, we establish local and global well-posedness results for the associated initial value problem (IVP) in both the critical and subcr
Externí odkaz:
http://arxiv.org/abs/2410.17217
Autor:
Santos, A. L. R. dos, Dalmazi, D.
The addition of mass terms in general breaks gauge symmetries which can be recovered usually via Stueckelberg fields. The massive BF model describes massive spin-1 particles while preserving the $U(1)$ symmetry without Stueckelberg fields. Replacing
Externí odkaz:
http://arxiv.org/abs/2311.04202
The Maxwell theory can be written as a first order model with the help of a two-form auxiliary field, such master action allows the proof of duality between $1$-form and $D-3$ forms. Here we show that the replacement of the two-form auxiliary field b
Externí odkaz:
http://arxiv.org/abs/2206.07676
Autor:
Lemes, Nelson H. T., Santos, Taináh M. R., Tavares, Camila A., Virtuoso, Luciano S., Souza, Kelly A. S., Ramalho, Teodorico C.
All signals obtained as instrumental response of analytical apparatus are affected by noise, as in Raman spectroscopy. Whereas Raman scattering is an inherently weak process, the noise background can lead to misinterpretations. Although surface ampli
Externí odkaz:
http://arxiv.org/abs/2204.02185
Recently a new model has been proposed to describe free massive spin-2 particles in $D$ dimensions in terms of a non symmetric rank-2 tensor $e_{\mu\nu}$ and a mixed symmetry tensor $B^{\mu[\alpha\beta]}$. The model is invariant under linearized diff
Externí odkaz:
http://arxiv.org/abs/2112.11890
Autor:
Dalmazi, D., Santos, A. L. R. dos
We suggest a new spin-4 self-dual model (parity singlet) and a new spin-4 parity doublet in $D=2+1$. They are of higher order in derivatives and are described by a totally symmetric rank-4 tensor without extra auxiliary fields. Despite the higher der
Externí odkaz:
http://arxiv.org/abs/2107.08879
Autor:
Abdalla, Elcio, Ferreira, Elisa G. M., Landim, Ricardo G., Costa, Andre A., Fornazier, Karin S. F., Abdalla, Filipe B., Barosi, Luciano, Brito, Francisco A., Queiroz, Amilcar R., Villela, Thyrso, Wang, Bin, Wuensche, Carlos A., Marins, Alessandro, Novaes, Camila P., Liccardo, Vincenzo, Shan, Chenxi, Zhang, Jiajun, Zhang, Zhongli, Zhu, Zhenghao, Browne, Ian, Delabrouille, Jacques, Santos, Larissa, Santos, Marcelo V. dos, Xu, Haiguang, Anton, Sonia, Battye, Richard, Chen, Tianyue, Dickinson, Clive, Ma, Yin-Zhe, Maffei, Bruno, de Mericia, Eduardo J., Motta, Pablo, Otobone, Carlos H. N., Peel, Michael W., Roychowdhury, Sambit, Remazeilles, Mathieu, Ribeiro, Rafael M., Sang, Yu, Santos, Joao R. L., Santos, Juliana F. R. dos, Silva, Gustavo B., Vieira, Frederico, Vieira, Jordany, Xiao, Linfeng, Zhang, Xue, Zhu, Yongkai
Publikováno v:
A&A 664, A14 (2022)
Observations of the redshifted 21-cm line of neutral hydrogen (HI) are a new and powerful window of observation that offers us the possibility to map the spatial distribution of cosmic HI and learn about cosmology. BINGO (Baryon Acoustic Oscillations
Externí odkaz:
http://arxiv.org/abs/2107.01633
Autor:
Abdalla, Filipe B., Marins, Alessandro, Motta, Pablo, Abdalla, Elcio, Ribeiro, Rafael M., Wuensche, Carlos A., Delabrouille, Jacques, Fornazier, Karin S. F., Liccardo, Vincenzo, Maffei, Bruno, de Mericia, Eduardo J., Otobone, Carlos H. N., Santos, Juliana F. R. dos, Silva, Gustavo B., Vieira, Jordany, Barretos, João A. M., Barosi, Luciano, Brito, Francisco A., Queiroz, Amilcar R., Villela, Thyrso, Wang, Bin, Costa, Andre A., Ferreira, Elisa G. M., Landim, Ricardo G., Novaes, Camila Paiva, Peel, Michael W., Santos, Larissa, Santos, Marcelo V. dos, Zhang, Jiajun
Publikováno v:
A&A 664, A16 (2022)
The BINGO telescope was designed to measure the fluctuations of the 21-cm radiation arising from the hyperfine transition of neutral hydrogen and aims to measure the Baryon Acoustic Oscillations (BAO) from such fluctuations, therefore serving as a pa
Externí odkaz:
http://arxiv.org/abs/2107.01635
Autor:
Santos, F. D. R., Dias, R. G.
Publikováno v:
Scientific Reports volume 10, 4532 (2020)
Adding interactions to many-body Hamiltonians of geometrically frustrated lattices often leads to diminished subspaces of localized states. In this paper, we show how to construct interacting many-body Hamiltonians, starting from the non-interacting
Externí odkaz:
http://arxiv.org/abs/2004.00596
Autor:
Dalmazi, D., Santos, A. L. R. dos
Here we start from a dual version of Vasiliev's first order action for massless spin-2 particles (linearized first order Einstein-Hilbert) and derive, via Kaluza-Klein dimensional reduction from $D+1$ to $D$ dimensions, a set of dual massive spin-2 m
Externí odkaz:
http://arxiv.org/abs/2003.12658