| 1. |
- Buoninfante, Luca, 1992-, et al.
(författare)
-
Quantum gravity, higher derivatives and nonlocality
- 2022
-
Ingår i: NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS. - : SOC ITALIANA FISICA. - 2037-4909 .- 1826-9885. ; 45:2
-
Tidskriftsartikel (refereegranskat)abstract
- The aim of the workshop Quantum Gravity, Higher Derivatives & Nonlocality (QGRAV-2021) was to assess our current understanding of the interplay between gravity and quantum mechanics, with particular attention to what is the main role of higher derivatives and nonlocality in the formulation of a consistent theory of quantum gravity, and whether they are really necessary to describe Nature at a fundamental level. The workshop had brought together various schools of thought, and besides talks numerous discussions were also held. In addition to focusing on formal aspects of several approaches, applications of higher derivatives arid non locality were also discussed in the context of cosmology and black-hole physics. In this preface article we present a concise explanation of the main problems underlying the quantization of gravity in the high-energy regime, briefly list several approaches that have been proposed so far, and also provide a gist of what was intensively discussed during the workshop.
|
|
| 2. |
- Casiraghi, I, et al.
(författare)
-
Scenario modelling for the Divertor Tokamak Test facility
- 2022
-
Ingår i: NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS. - : SOC ITALIANA FISICA. - 2037-4909. ; 45:6
-
Tidskriftsartikel (refereegranskat)abstract
- The scenario integrated modelling is a top priority work during the design of a new tokamak, as the Divertor Tokamak Test facility (DTT) under construction at the ENEA Research Center in Frascati. The first simulations of the main baseline scenarios contributed to the optimization of the DTT project, particularly with regard to the machine size and heating systems, besides serving as reference for diagnostics design. In this paper we report the first simulations of the full power baseline scenario in the final configuration of the machine and heating mix.
|
|
| 3. |
- Idini, A., et al.
(författare)
-
Collective wavefunction of Yrast states in 50Cr
- 2024
-
Ingår i: Nuovo Cimento della Societa Italiana di Fisica C. - 2037-4909. ; 47:2
-
Tidskriftsartikel (refereegranskat)abstract
- In the generator coordinate method the wavefunctions are defined with respect to reference states that can indicate different shapes and deformations, which are examples of collective generator coordinates. In this work, we study the collective wavefunctions of Yrast states up to the terminating state of 50Cr using a recently introduced framework to calculate projected states of spins up to I = 14 based on effective Hamiltonians and a 5 dimensional collective coordinate space.
|
|
| 4. |
- Marcelli, L., et al.
(författare)
-
The Mini-EUSO telescope on board the International Space Station : Launch and first observations
- 2021
-
Ingår i: NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS. - : SOC ITALIANA FISICA. - 2037-4909. ; 44:2-3
-
Tidskriftsartikel (refereegranskat)abstract
- Mini-EUSO is a telescope that observes the Earth from the International Space Station by recording ultraviolet emissions (290-430 nm) of cosmic, atmospheric and terrestrial origin with a field of view of 44. and on different time scales, from a few microseconds upwards. The scientific objectives are manifold and span several fields of research: Ultra-High Energy Cosmic Rays, atmospheric phenomena such as ELVEs, meteors and meteoroids, maps of the Earth night-time ultraviolet emissions and others. In this paper we will describe the instrument, the launching phase and we will discuss some of its first observations.
|
|
| 5. |
- Pieramico, G., et al.
(författare)
-
Geant4 simulation of the ABALONE photosensor
- 2022
-
Ingår i: Il Nuovo Cimento. - 2037-4909 .- 1826-9885. ; 45:1
-
Tidskriftsartikel (refereegranskat)abstract
- The ABALONE is a new type of photosensor produced by PhotonLab, Inc. with cost effective mass production, robustness and high performance. This modern technology provides sensitivity to visible and UV light, exceptional radio-purity and excellent detection performance in terms of intrinsic gain, afterpulsing rate, timing resolution and single-photon sensitivity. The ABALONE is based on the acceleration of photoelectrons in vacuum. These are generated in a traditional photocathode and guided towards a window of scintillating material. The resulting scintillation light can be read from the outside via a silicon photomultiplier (SiPM). The device has been proposed as a possible candidate for the DARWIN experiment. We performed the complete simulation of the detector, mapped the electrostatic field within the vacuum of the sensor and studied its possible optimization.
|
|
| 6. |
- Polettini, M., et al.
(författare)
-
Decay studies in the A∼225 Po-Fr region from the DESPEC campaign at GSI in 2021
- 2022
-
Ingår i: Il Nuovo Cimento. - : Società Italiana di Fisica. - 2037-4909. ; 45:5
-
Tidskriftsartikel (refereegranskat)abstract
- The HISPEC-DESPEC collaboration aims at investigating the structure of exotic nuclei formed in fragmentation reactions with decay spectroscopy measurements, as part of the FAIR Phase-0 campaign at GSI. This paper reports on first results of an experiment performed in spring 2021, with a focus on beta-decaystudies in the Po-Fr nuclei in the 220 < A <230 island of octupole deformation exploiting the DESPEC setup. Ion-beta correlations and fast-timing techniques are being employed, giving an insight into this difficult-to-reach region.
|
|
| 7. |
- Polettini, M., et al.
(författare)
-
DESPEC Phase-0 campaign at GSI
- 2021
-
Ingår i: NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS. - : SOC ITALIANA FISICA. - 2037-4909. ; 44:2-3
-
Tidskriftsartikel (refereegranskat)abstract
- This paper reports preliminary results of the DESPEC campaign at GSI, focused on the study of neutron-deficient nuclei approaching Sn-100. The results presented show the isomeric decays of excited states with I-pi = 14(+) and 8(+) in Pd-96 and Pd-94, respectively. The detailed characterisation of the DESPEC set-up and analysis methodologies, proven in this experimental run, are crucial for the future campaigns.
|
|
| 8. |
- Polimeno, P., et al.
(författare)
-
Position locking of a resonant gain-assisted metallic/dielectric nano-shell in Optical Tweezers
- 2021
-
Ingår i: Nuovo Cimento C-Colloquia and Communications in Physics. - 2037-4909. ; 44:4-5
-
Tidskriftsartikel (refereegranskat)abstract
- We calculate optical forces on dye-enriched resonant nano-shells in dual-beam Optical Tweezers. We investigate the non-linear gain-assisted enhancement of their optomechanics and study their behaviour through Brownian dynamics simulations. When the wavelength is red detuned with respect to the plasmon resonance, we observe that the particles are efficiently trapped at the laser beam intensity maxima of the dual beam standing wave. Conversely, for blue-detuned wavelengths the nano-shells are channelled through the standing wave antinodes due to the sign reversal of the optical force. This open perspectives for gain-assisted optomechanics where non-linear optical forces are finely tuned to manipulate controlled nano-photonic systems.
|
|
| 9. |
- Spartà, R., et al.
(författare)
-
8B reaction dynamics researched at HIE-ISOLDE
- 2024
-
Ingår i: Nuovo Cimento della Societa Italiana di Fisica C. - 2037-4909 .- 1826-9885. ; 47:2
-
Tidskriftsartikel (refereegranskat)abstract
- For the first time a measurement of 8B + 64Zn reaction has been performed at HIE-ISOLDE at CERN at energies around the Coulomb barrier, to understand how the debated halo structure of the light nucleus can affect reaction dynamics.
|
|
