A5075758928- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Pulsars and Gravitational Waves Research
- Atomic and Subatomic Physics Research
- Radioactive Decay and Measurement Techniques
- Mathematical Biology Tumor Growth
- Particle Detector Development and Performance
- Gamma-ray bursts and supernovae
- Quantum Mechanics and Applications
- Quantum Chromodynamics and Particle Interactions
- Atomic and Molecular Physics
- Muon and positron interactions and applications
- Gene Regulatory Network Analysis
- Cosmology and Gravitation Theories
- Cold Atom Physics and Bose-Einstein Condensates
- Astrophysical Phenomena and Observations
- High-Energy Particle Collisions Research
- Scientific Research and Discoveries
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Cancer Cells and Metastasis
- Neutrino Physics Research
- Particle Accelerators and Free-Electron Lasers
- Neural Networks and Applications
- High-pressure geophysics and materials
University of Trieste
2016-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
2016-2025
Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
2011-2022
Istituto Nazionale di Fisica Nucleare
1986-2019
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2001-2019
Sapienza University of Rome
2015-2019
Institute of Nuclear Physics, Polish Academy of Sciences
2019
GSI Helmholtz Centre for Heavy Ion Research
2019
Technical University of Darmstadt
2019
Jagiellonian University
2015
We report the experimental observation of a light polarization rotation in vacuum presence transverse magnetic field. Assuming that data distribution is Gaussian, average measured (3.9 +/- 0.5) x 10(-12) rad/pass, at 5 T with 44 000 passes through 1 m long magnet, lambda = 1064 nm. The relevance this result terms existence light, neutral, spin-zero particle discussed.
Vacuum magnetic birefringence was predicted long time ago and is still lacking a direct experimental confirmation. Several efforts are striving to reach this goal, the sequence of results promises success in next few years. This measurement generally accompanied by search for hypothetical light particles that couple two photons. The PVLAS experiment employs sensitive polarimeter based on high finesse Fabry–Perot cavity. In paper we report latest experiment. data analysed taking into account...
In 2006 the PVLAS collaboration reported observation of an optical rotation generated in vacuum by a magnetic field. To further check against possible instrumental artifacts, several upgrades to apparatus have been made during past year. Two data taking runs, at wavelength 1064 nm, performed new configuration with field strengths 2.3 and 5 T. The T value was chosen order avoid stray fields. observations do not show presence signal down levels...
coherent WaveBurst (cWB) is a highly configurable pipeline designed to detect broad range of gravitational-wave (GW) transients in the data worldwide network GW detectors. The algorithmic core cWB time–frequency analysis with Wilson–Daubechies–Meyer wavelets aimed at identification events without prior knowledge signal waveform. has been active development since 2003 and it used analyze all scientific collected by LIGO-Virgo detectors ever since. On September 14, 2015, low-latency search...
Several groups are carrying out experiments to observe and measure vacuum magnetic birefringence, predicted by quantum electrodynamics (QED). We have started running the new PVLAS apparatus installed in Ferrara, Italy, measured a noise floor value for unitary field birefringence of $\mathrm{\ensuremath{\Delta}}{n}_{u}^{(\mathrm{vac})}=(4\ifmmode\pm\else\textpm\fi{}20)\ifmmode\times\else\texttimes\fi{}1{0}^{\ensuremath{-}23}\text{ }\text{ }{\mathrm{T}}^{\ensuremath{-}2}$ (the error represents...
Abstract Acidosis of the tumor microenvironment leads to cancer invasion, progression and resistance therapies. We present a biophysical model that describes how cells regulate intracellular extracellular acidity while they grow in characterized by increasing hypoxia. The takes into account dynamic interplay between glucose $$\hbox {O}_2$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mtext>O</mml:mtext> <mml:mn>2</mml:mn> </mml:msub> </mml:math> consumption with...
We describe the principle and status of PVLAS experiment which is presently running at INFN section Ferrara, Italy, to detect magnetic birefringence vacuum. This related QED vacuum structure can be detected by measuring ellipticity acquired a linearly polarized light beam propagating through strong field. Such an effect predicted Euler-Heisenberg Lagrangian. The method also sensitive other hypothetical physical effects such as axion-like particles in general any fermion/boson millicharged...
The PVLAS collaboration is presently assembling a new apparatus (at the INFN section of Ferrara, Italy) to detect vacuum magnetic birefringence (VMB). VMB related structure QED and predicted by Euler-Heisenberg-Weisskopf effective Lagrangian. It can be detected measuring ellipticity acquired linearly polarised light beam propagating through strong field. Using very same optical technique it also possible search for hypothetical low-mass particles interacting with two photons, such as...
This paper presents a search for generic short-duration gravitational-wave (GW) transients (or GW bursts) in the data from third observing run of Advanced LIGO and Virgo. We use coherent WaveBurst (cWB) pipeline enhanced with decision-tree classification algorithm more efficient separation signals noise transients. The machine-learning (ML) is trained on representative set events simulated stochastic that are not correlated any known signal model. training procedure preserves...
Experimental bounds on induced vacuum magnetic birefringence can be used to improve present photon-photon scattering limits in the electronvolt energy range. Measurements with Polarizzazione del Vuoto con Laser apparatus [E. Zavattini et al., Phys. Rev. D 77, 032006 (2008)] at both $\ensuremath{\lambda}=1064$ and 532 nm lead parameter ${A}_{e}$, describing nonlinear effects QED, of ${A}_{e}^{(1064)}<6.6\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}21}\text{ }\text{...
The Pauli exclusion principle (PEP) is one of the basic principles modern physics and, even if there are no compelling reasons to doubt its validity, it still debated today because an intuitive, elementary explanation missing, and unique stand among symmetries physics. present Letter reports a new limit on probability that PEP violated by electrons, in search for anomalous Kα line copper: presence this soft X-ray copper fluorescence would signal transition ground state already occupied 2...
Multicellular tumor spheroids are an important in vitro model of the pre-vascular phase solid tumors, for sizes well below diagnostic limit: therefore a biophysical has ability to shed light on internal workings and organization tumors at critical their development. To this end, we have developed computer program that integrates behavior individual cells interactions with other surrounding environment. It is based quantitative description metabolism, growth, proliferation death single cells,...
We report on the resonant Fabry Perot cavity of PVLAS (Polarization Vacuum with LASer) experiment operating at λ = 1064 nm a record decay time 2.7 ms, factor more than two larger any previously reported optical resonator. This corresponds to coherence length 8.1 · 10(5) m. The is 3.303 m, and resulting finesse 770,000.
On May 21, 2019 Advanced LIGO and Virgo detectors observed a gravitational-wave transient GW190521, the heaviest binary black-hole merger detected to date with remnant mass of 142$\,$M$_\odot$ that was published recently. This observation is first strong evidence for existence intermediate-mass black holes. The significance this determined by coherent WaveBurst (cWB) - search algorithm, which identified GW190521 minimal assumptions on its source model. In paper, we demonstrate capabilities...
We describe the principle and status of PVLAS experiment which is being assembled at INFN Laboratori Nazionali di Legnaro (Legnaro, Padua, Italy) to look for coherent effects, related QED vacuum structure, on propagation a polarized light beam in strong magnetic field.
The spin–statistics connection, in particular the Pauli exclusion principle (PEP), plays a very important role our comprehension of matter and nature. Presently, PEP violation, possible within some theories, generates lively debate; it has given birth to few experiments looking for tiny effects. violation experiment put strong limit on probability by electrons, using method searching forbidden atomic transitions copper target. In this paper we present experiment, obtained results future...
Hypoxia is central to tumour evolution, growth, invasion and metastasis. Mathematical models of hypoxia based on reaction-diffusion equations provide seemingly incomplete descriptions as they fail predict the measured oxygen concentrations in microenvironment. In an attempt explain discrepancies, we consider both inhomogeneous distribution oxygen-consuming cells solid tumours dynamics blood flow microcirculation. We find that low-frequency oscillations play important role establishment...
The VIolation of Pauli exclusion principle -2 experiment, or VIP-2 at the Laboratori Nazionali del Gran Sasso searches for X-rays from copper atomic transitions that are prohibited by principle. Candidate direct violation events come transition a 2p electron to ground state is already occupied two electrons. From first data taking campaign in 2016 we determined best upper limit [Formula: see text] probability such exists. Significant improvement control experimental systematics was also...
In this paper, we investigate the morphology of events from GWTC-1 catalog compact binary coalescences as reconstructed by a method based on coherent excess power: use an open-source version WaveBurst (cWB) analysis pipeline, which does not make waveform models. The response LIGO-Virgo network detectors is estimated using loose bounds duration and bandwidth signal. This pipeline reproduces same results that are reported for cWB in recent publications LIGO Virgo collaborations. particular,...