Zobrazeno 1 - 10
of 477
pro vyhledávání: '"P. Porrati"'
Powerful techniques have been developed in quantum field theory that employ algebras of local operators, yet local operators cannot create physical charged states in gauge theory or physical nonzero-energy states in perturbative quantum gravity. A co
Externí odkaz:
http://arxiv.org/abs/2411.08865
Autor:
Porrati, M., Zaffaroni, A.
In Anti de Sitter space both massive and massless high-spin particles can have consistent local interactions. Both can couple to conserved currents. In this paper we show that when the particles have spin one or greater, there exists a universal feat
Externí odkaz:
http://arxiv.org/abs/2408.16919
Autor:
Jang, Hun, Porrati, Massimo
Publikováno v:
JHEP08(2024)019
A model of supergravity inflation we recently proposed can produce slow roll inflation and a realistic spectrum of particles even without F-term supersymmetry breaking. Supersymmetry is broken only by a D-term induced by a recently discovered new typ
Externí odkaz:
http://arxiv.org/abs/2405.00551
Autor:
Schröder, Christian, Ghebretinsae, Bereket, Lonsky, Martin, Mamoori, Mohanad Al, Porrati, Fabrizio, Huth, Michael, Müller, Jens
We present a comprehensive study of small-scale three-dimensional (3D) tetrahedral CoFe nanostructure arrays prepared by focused electron beam-induced deposition (FEBID) and placed in two distinct orientations with respect to the direction of an exte
Externí odkaz:
http://arxiv.org/abs/2402.17594
Autor:
Javadinezhad, Reza, Porrati, Massimo
We describe and solve three puzzles arising in covariant and supertranslation-invariant formulas for the flux of angular momentum and other Lorentz charges in asymptotically flat spacetimes: 1) Supertranslation-invariance and covariance imply invaria
Externí odkaz:
http://arxiv.org/abs/2312.02458
Autor:
Gabadadze, Gregory, Porrati, Massimo
A recently proposed effective action for the trace anomaly describes a tensor-scalar theory that is weakly coupled up to a certain high energy scale, where it becomes strongly interacting. Its ultraviolet completion is obtained by coupling to gravity
Externí odkaz:
http://arxiv.org/abs/2306.16018
Autor:
Hun Jang, Massimo Porrati
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-16 (2024)
Abstract A model of supergravity inflation we recently proposed can produce slow roll inflation and a realistic spectrum of particles even without F-term supersymmetry breaking. Supersymmetry is broken only by a D-term induced by a recently discovere
Externí odkaz:
https://doaj.org/article/4c0f1d02e3ba434084058ddcbd388637
We study solvable deformations of two-dimensional quantum field theories driven by a bilinear operator constructed from a pair of conserved $U(1)$ currents $J^a$. We propose a quantum formulation of these deformations, based on the gauging of the cor
Externí odkaz:
http://arxiv.org/abs/2302.01654
Autor:
Javadinezhad, Reza, Porrati, Massimo
The angular momentum radiated in gravitational scattering can be changed by performing a supertranslation of the asymptotic metric, i.e. by adding radiation with infinite wavelenght to the metric. This puzzling property can be avoided by adopting a s
Externí odkaz:
http://arxiv.org/abs/2211.06538
Autor:
Oleksii M. Volkov, Oleksandr V. Pylypovskyi, Fabrizio Porrati, Florian Kronast, Jose A. Fernandez-Roldan, Attila Kákay, Alexander Kuprava, Sven Barth, Filipp N. Rybakov, Olle Eriksson, Sebastian Lamb-Camarena, Pavlo Makushko, Mohamad-Assaad Mawass, Shahrukh Shakeel, Oleksandr V. Dobrovolskiy, Michael Huth, Denys Makarov
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-13 (2024)
Abstract Additive nanotechnology enable curvilinear and three-dimensional (3D) magnetic architectures with tunable topology and functionalities surpassing their planar counterparts. Here, we experimentally reveal that 3D soft magnetic wireframe struc
Externí odkaz:
https://doaj.org/article/cb736b0f18ee47fa908cdbc2e9c70fa3