A5090504727- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Advanced MRI Techniques and Applications
- Atomic and Subatomic Physics Research
- Advanced Vision and Imaging
- Geophysics and Gravity Measurements
- High-Energy Particle Collisions Research
- Technology and Data Analysis
- Hand Gesture Recognition Systems
- Medical Imaging Techniques and Applications
- Robotics and Sensor-Based Localization
- Radiomics and Machine Learning in Medical Imaging
- Cardiac Imaging and Diagnostics
- Black Holes and Theoretical Physics
- Augmented Reality Applications
- Galaxies: Formation, Evolution, Phenomena
- Traditional Chinese Medicine Studies
- Optical measurement and interference techniques
- Advanced Thermodynamics and Statistical Mechanics
- Video Analysis and Summarization
- 3D Surveying and Cultural Heritage
- Advanced NMR Techniques and Applications
- Healthcare and Venom Research
- Interactive and Immersive Displays
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2023-2024
Phantom Design (United States)
2024
Institut National de Physique Nucléaire et de Physique des Particules
2023
Centre National de la Recherche Scientifique
2023
Severance Hospital
2023
Yonsei University
2023
Université Paris-Saclay
2023
University of Helsinki
2019-2022
Helsinki Institute of Physics
2021-2022
Sogang University
2015-2019
Abstract We consider the effects of fragmentation on post-inflationary epoch reheating. In simple single field models inflation, an inflaton condensate undergoes oscillatory phase once inflationary expansion ends. The equation state depends shape scalar potential, V ( ϕ ), about its minimum. Assuming ) ∼ k , parameter is given by w = P / ρ - 2)/( + 2). evolution and reheating process depend . For ≥ 4, self-interactions may lead to alter process. Indeed, these production a massless gas...
We study postinflationary scalar dark matter production via its non-minimal coupling to gravity. During the inflaton oscillation epoch, is produced resonantly for a sufficiently large $\xi\gtrsim 5$. find that backreaction on curvature and rescattering effects typically become important values of $\xi$ above $30$, which invalidate simple estimates efficiency. At couplings, yield becomes almost independent $\xi$, signifying approximate quasi-equilibrium in inflaton-dark system. Although...
The DAMA/LIBRA collaboration has recently released updated results from their search for the annual modulation signal expected Dark Matter (DM) scattering in NaI detectors. We have fitted DAMA result amplitudes terms of a Weakly Interacting Massive Particle (WIMP) signal, parameterizing interaction with nuclei most general effective Lagrangian WIMP particle spin up to 1/2, systematically assuming dominance one 14 possible terms, and velocity distribution standard Maxwellian. find that...
We study inflationary models based on a non-minimal coupling of singlet scalar to gravity, focussing the preheating dynamics and unitarity issues in this regime. If does not have significant couplings other fields, particle production after inflation is far less efficient than that Higgs inflation. As result, violation at large requires different treatment. find collective effects inflaton scattering processes during make an important impact constraint. Within effective field theory,...
Guided by non-relativistic Effective Field Theory (EFT) we classify the most general spin-dependent interactions between a fermionic Weakly Interacting Massive Particle (WIMP) and nuclei, within this class of models discuss viability an interpretation DAMA modulation result in terms signal from WIMP elastic scatterings using halo-independent approach. We find that, although several relativistic EFT's can lead to cross section, some cases with explicit, non-negligible dependence on incoming...
We examine an intriguing possibility that a single field is responsible for both inflation and dark matter, focussing on the minimal set-up where driven by scalar coupling to curvature. study in detail reheating process this framework, which amounts mainly particle production quartic potential, distinguish thermal non-thermal matter options. In case, impeded backreaction rescattering, making unrealistic. On other hand, thermalized viable, yet unitarity bound forces inflaton mass into narrow...
We study scalar dark matter production and reheating via renormalizable inflaton couplings, which include both quartic trilinear interactions. These processes often depend crucially on collective effects such as resonances, backreaction rescattering of the produced particles. To take them into account, we perform lattice simulations map out parameter space producing correct (non-thermal) density. find that inflaton-dark system can reach a quasi-equilibrium state during preheating already at...
Abstract We consider dark matter production during the inflaton oscillation epoch. It is conceivable that renormalizable interactions between and may be negligible. In this case, leading role played by higher dimensional operators generated gravity thus suppressed Planck scale. focus on dim-6 study corresponding particle in perturbative non-perturbative regimes. find rate dominated non-derivative involving powers of field. Even if they appear with small Wilson coefficients, such can readily...
We re-examine the case of anapole dark matter as an explanation for DAMA annual modulation in light DAMA/LIBRA-phase2 results and improved upper limits from other DM searches. If WIMP velocity distribution is assumed to be a Maxwellian, unable provide compatible with Nevertheless, provides better fit DAMA-phase2 data than isoscalar spin-independent interaction, due its magnetic coupling sodium targets. A halo-independent analysis shows that explaining above 2 keVee terms basically impossible...
Assuming a standard Maxwellian for the WIMP velocity distribution, we obtain bounds from null search results of 59.5 days COSINE-100 data on DAMA/LIBRA-phase2 modulation effect within context non-relativistic effective theory WIMP-nucleus scattering. Here, systematically assume that one operators allowed by Galilean invariance dominates in Hamiltonian spin-1/2 dark matter (DM) particle. We find that, although DAMA/LIBRA and use same sodium-iodide target, comparison two still depends...
This study aimed to predict pathologic complete response (pCR) in neoadjuvant chemotherapy for ER+HER2- locally advanced breast cancer (LABC), a subtype with limited treatment response.We included 265 LABC patients (2010-2020) pre-treatment MRI, chemotherapy, and confirmed pathology. Using data from January 2016, we divided them into training validation cohorts. Volumes of interest (VOI) the tumoral peritumoral regions were segmented on preoperative MRI three sequences: T1-weighted early...
Nonketotic hyperglycinemia (NKH) is a rare metabolic brain disease caused by deficient activity of the glycine cleavage system. Localized proton MR spectroscopy (echo-time 166 msec), performed in an infant with typical clinical and biochemical features neonatal NKH, showed markedly increased peak intensity at 3.55 ppm, which was assigned to glycine. Serial spectroscopic studies indicated that glycine/choline glycine/total creatine ratios correlated closely patient's course. Proton useful for...
We had previously reported the association of <i>NQO1</i>*<i>2/</i>*<i>2</i> polymorphism with a decreased risk for multiple myeloma (MM) in Koreans (odds ratio, OR, 0.24; 95% confidence interval, CI, 0.01–0.68). The associations polymorphisms other metabolizing enzymes (<i>CYP1A1</i>, <i>GSTM1</i> and <i>GSTT1)</i> MM were investigated 116 Korean patients 176 controls using TaqMan allelic discrimination multiplex...
We show that the weakly interacting massive particle scenario of proton-philic spin-dependent inelastic dark matter (pSIDM) can still provide a viable explanation observed DAMA modulation amplitude in compliance with constraints from other experiments after release DAMA/LIBRA-phase2 data and including recent bound COSINE--100, uses same $NaI$ target DAMA. The pSIDM provided DAMA/LIBRA-phase1 both for Maxwellian WIMP velocity distribution halo--independent approach. At variance...
We study the possibility that, after inflation,the inflaton reaches thermal equilibrium with Standard Model bath and eventually freezes out in nonrelativistic regime. When decay is sole source of (nonthermal) dark matter, its relic density automatically suppressed. delineate parameter space leading to correct matter abundance. The model allows for a significant Higgs-inflaton coupling which may lead invisible Higgs into pairs at LHC.
Objectives: The purpose of this study was to report on the cases and prescriptions non-face-to-face care performed alleviate COVID-19 symptoms present their results.Methods: This conducted 63 patients who visited Ilsan Hamsoa Korean Medicine Clinic from January 24 June 11, 2022. We retrospectively analyzed all patient charts amassed COVID-19-related changes according clinical characteristics outcomes.Results: All complained symptoms, such as coughing, sore throat, sputum, fever, headache,...
Correction of an inhomogeneous magnetic field is proposed using partial differential phases in resonance imaging. Estimation the from a measured phase not easy task due to wrapping and chemical-dependent shifts. Using technique, such problems are resolved. The technique uses most 3D pixel data regardless chemical compounds for estimation field. A large number difference compared expansion terms model provides very stable estimation, robust noise. applicable vivo shimming, water-fat imaging,...
We discuss within the framework of effective four--fermion scalar interaction phenomenology a weakly interacting massive particle (WIMP) Dirac dark matter candidate which is exothermic (i.e., metastable and interacts with nuclear targets down-scattering to lower-mass state) Ge-phobic whose couplings quarks violate isospin symmetry leading suppression its cross section off Germanium targets). specific example CDMS--II Silicon three-candidate effect showing that region parameter space model...