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Bhabha-like scattering in the Rarita-Schwinger model at finite temperature

Autor: Araújo, M. C., Lima, J. G., Furtado, J., Mariz, T.

In this paper, we study a Bhabha-like scattering in a massive Rarita-Schwinger model at finite temperature. The analysis is conducted at the tree level and addresses temperature effects through the thermofield dynamics formalism. We consider the usua

Externí odkaz: http://arxiv.org/abs/2412.19910

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Quantum computation over the vibrational modes of a single trapped ion

Autor: Ricardo, Alexandre C., de Lima, Gubio G., Valério, Amanda G., Farias, Tiago de S., Villas-Boas, Celso J.

Continuous-variable quantum computing utilizes continuous parameters of a quantum system to encode information, promising efficient solutions to complex problems. Trapped-ion systems provide a robust platform with long coherence times and precise qub

Externí odkaz: http://arxiv.org/abs/2412.15025

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Carroll-Field-Jackiw term in a massless Rarita-Schwinger model

Autor: Gomes, M., Lima, J. G., Mariz, T., Nascimento, J. R., Petrov, A. Yu.

We consider the massless Rarita-Schwinger (RS) LV QED. In this theory, we introduce the gauge fixing to obtain the propagator for the RS field, and calculate the Carroll-Field-Jackiw term, which turns out to be finite and ambiguous, and only in one c

Externí odkaz: http://arxiv.org/abs/2410.01550

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Nonlinear refractive index changes and absorption coefficients in mesoscopic ring induced by variable effective mass

Autor: Assafrao, Denise, de Lima, A. G., Silva, Edilberto O., Filgueiras, Cleverson

This study explores the linear and nonlinear optical absorption coefficients (OAC) and refractive index changes (RIC) in quantum dot and quantum antidot systems with a position-dependent variable effective mass. Significant contributions to both line

Externí odkaz: http://arxiv.org/abs/2408.16746

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Partially coherent beam: Theory and simulation

Autor: de Lima, Gubio G., Dourado, Sinara S.

Since the development of lasers, we have continuously sought to advance techniques and theory to obtain beams with a high degree of coherence, as natural light sources provide incoherent light. However, there are applications where it is advantageous

Externí odkaz: http://arxiv.org/abs/2403.09306

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Non-Abelian Carroll-Field-Jackiw term term in a Rarita-Schwinger model

Autor: Gomes, M., Lima, J. G., Mariz, T., Nascimento, J. R., Petrov, A. Yu.

Publikováno v: Phys. Lett. B845, 138141 (2023)

In this paper, we demonstrate the possibility of generating a non-Abelian Carroll-Field-Jackiw (CFJ) term in the theory of a non-Abelian gauge field coupled to a spin-3/2 field in the presence of the constant axial vector field. Applying two regulari

Externí odkaz: http://arxiv.org/abs/2308.16308

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