Zobrazeno 1 - 10
of 404
pro vyhledávání: '"Gazeau, Jean-Pierre"'
It is known that the momentum operator canonically conjugated to the position operator for a particle moving in some bounded interval of the line {(with Dirichlet boundary conditions) is not essentially self-adjoint}: it has a continuous set of self-
Externí odkaz:
http://arxiv.org/abs/2406.06989
Autor:
Gazeau, Jean-Pierre, Pejhan, Hamed
We revisit the concept of `tachyonic' scalar fields, characterized by a real negative squared `mass', in de Sitter (dS) spacetime. Through a rigorous group-theoretical analysis, we argue that labeling these fields as `tachyonic' lacks physical releva
Externí odkaz:
http://arxiv.org/abs/2403.17539
Autor:
Riccoboni, Jean-Baptiste, Monnet, Tony, Eon, Antoine, Lacouture, Patrick, Gazeau, Jean-Pierre, Campone, Mario
Publikováno v:
Applied Ergonomics, 2021, 90, pp.103284
Background: Occupational safety and health institutions report that caregivers areparticularly at risk of developing work-related musculoskeletal disorders (WRMSDs) andpatient handling is often pointed out as one of the main causes. While lots of stu
Externí odkaz:
http://arxiv.org/abs/2402.09479
Publikováno v:
Phys. Rev. D 109, 023516 (2024)
We have discovered a class of dynamically stable coherent states for motion on the half-line. The regularization of the half-line boundary and the consequent quantum motion are expounded within the framework of covariant affine quantization, although
Externí odkaz:
http://arxiv.org/abs/2310.16868
Publikováno v:
Phys. Lett. B 848 (2024) 138402
This manuscript introduces a novel holographic correspondence in $d$-dimensional de Sitter (dS$_d$) spacetime, connecting bulk dS$_d$ scalar unitary irreducible representations (UIRs) with their counterparts at the dS$_d$ boundary ${\cal{I}}^\pm$, al
Externí odkaz:
http://arxiv.org/abs/2309.02122
We elaborate the definition and properties of ''massive" elementary systems in the (1+3)-dimensional Anti-de Sitter (AdS$_4$) spacetime, on both classical and quantum levels. We fully exploit the symmetry group Sp$(4,\mathbb R)$, that is, the two-fol
Externí odkaz:
http://arxiv.org/abs/2307.06690
Autor:
Gazeau, Jean-Pierre, Pejhan, Hamed
Publikováno v:
Phys. Rev. D 108, 065012 (2023)
We present a covariant quantization scheme for the so-called "partially massless" graviton field in de Sitter spacetime. Our approach is founded on the principles of the de Sitter group representation theory (in the sense given by Wigner), the Wightm
Externí odkaz:
http://arxiv.org/abs/2306.10086
Publikováno v:
J. Opt. Soc. Am. B 40, 1083-1091 (2023)
We revisit the Perelomov SU(1,1) displaced coherent states states as possible quantum states of light. We disclose interesting statistical aspects of these states in relation with photon counting and squeezing. In the non-displaced case we discuss th
Externí odkaz:
http://arxiv.org/abs/2304.08031
Publikováno v:
Phys. Rev. D 108, 043534 (2023)
We study a semiclassical model of the mixmaster universe. We first derive the quantum model and then introduce its semiclassical approximation. We employ a general integral quantization method that respects the symmetries of the model given by the af
Externí odkaz:
http://arxiv.org/abs/2303.07873