Article
Astronomy & Astrophysics
R. N. Faustov, V. O. Galkin
Summary: In this study, the relativistic quark model based on the quark-diquark picture and the quasipotential approach in QCD is employed to investigate the properties of triply heavy baryons. The masses of Omega(ccc), Omega(bbb), Omega(ccb), and Omega(cbb) baryons in their ground and excited states are calculated, taking into account the orbital and radial excitations between the diquark and quark, as well as between the quarks inside the diquark. The internal structure of the diquark is consistently considered through the form factor of the diquark-gluon interaction, expressed by the overlap integral of the diquark wave functions. A detailed comparison with previous calculations is provided.
Article
Physics, Multidisciplinary
Hao-Ze Tong, Hao-Song Li
Summary: In this study, the masses of the doubly bottom baryons and charmed-bottom baryons are investigated up to O(p(3)) in heavy baryon chiral perturbation theory. The unknown low energy constants in the quark model and lattice QCD are determined. The numerical results for the masses of these baryons are presented up to O(p(3)).
COMMUNICATIONS IN THEORETICAL PHYSICS
(2022)
Article
Astronomy & Astrophysics
Antonio Ambrosone, Roberta Calabrese, Damiano F. G. Fiorillo, Gennaro Miele, Stefano Morisi
Summary: A new baryogenesis mechanism was proposed by Dolgov and Pozdnyakov, where baryon asymmetry is produced without violating baryon number at the Lagrangian level. However, further analysis revealed fundamental issues in the scenario, including the initial increase in baryon asymmetry by PBH absorption followed by complete absorption at later times. Additionally, the proposed CP-violation model in this framework was found to be qualitatively correct but quantitatively inconsistent with observed baryon asymmetry.
Article
Chemistry, Physical
Hamou Moussout, Younes Dehmani, Dison S. P. Franco, Jordana Georgin, Ikram Daou, Taibi Lamhasni, Chabri Ilyas, Hammou Ahlafi, Mohamed Taky, Abdelillah Shaim, Abouarnadasse Sadik
Summary: This study investigates the adsorption of cadmium on biopolymers synthesized from shrimp shells, which have the potential to be a new and promising adsorbent for this toxic pollutant. Various spectroscopic techniques were used to characterize chitin and experimental data showed that the adsorption of Cd(II) followed pseudo-second-order kinetics and was influenced by temperature. The adsorption capacity was found to be 58.82 mg g-1 at 308 K, and ranged from 57.40 to 59.90 mg g-1 at different temperatures. The adsorption mechanism was determined to be physical and endothermic, with dipole-dipole interactions and possible coordination bounds playing a role. The results suggest that chitin could be a cost-effective alternative to other adsorbents for cadmium removal.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Timothy R. Corkish, Christian T. Haakansson, Peter D. Watson, Hayden T. Robinson, Allan J. McKinley, Duncan A. Wild
Summary: The study presents the interaction between different solvated halide ions and aldehyde molecules, showing excellent agreement between experimental results and theoretical calculations.
Review
Neurosciences
Abigail E. Calder, Gregor Hasler
Summary: Classic psychedelics have the potential to treat depression, anxiety, and addiction, with clinical improvements lasting for months or years. They stimulate neuroplasticity rapidly and lastingly, leading to dendritogenesis, synaptogenesis, neurogenesis, and expression of plasticity-related genes. The prefrontal cortex and hippocampus are involved in psychedelics' promotion of neuroplasticity. The dosage and duration of the effects of psychedelics on neuroplasticity vary. Understanding the effects of psychedelics on neuroplasticity and their potential clinical applications is crucial.
NEUROPSYCHOPHARMACOLOGY
(2023)
Review
Physiology
Alberto Rock, David Wilcockson, Kim S. Last
Summary: Circadian clocks are essential for life, and the study of circatidal clocks in intertidal organisms is crucial for understanding the origin and evolution of chronobiology.
FRONTIERS IN PHYSIOLOGY
(2022)
Review
Medicine, General & Internal
Mary-Ann Fitzcharles, Steven P. Cohen, Daniel J. Clauw, Geoffrey Littlejohn, Chie Usui, Winfried Haeuser
Summary: Nociplastic pain is a term used by pain researchers to describe a type of pain mechanism that differs from nociceptive and neuropathic pain, involving augmented CNS pain processing and altered pain modulation. Symptoms include widespread or intense pain beyond expected levels, as well as other CNS-related issues like fatigue and mood problems. Different treatment approaches are needed for nociplastic pain compared to nociceptive pain.
Article
Astronomy & Astrophysics
Stefan Groote, Mikhail A. Ivanov, Jurgen G. Korner, Valery E. Lyubovitskij, Pietro Santorelli, Chien-Thang Tran
Summary: In the semileptonic decays of heavy mesons and baryons, the lepton-mass dependence plays a role in the quadratic terms of the cosine distribution, known as the convexity parameter. This observation provides a way to test lepton universality independently of form-factor effects. By defining optimized partial rates, one can investigate how new physics effects may affect the identity of the rates in different lepton modes.
Review
Chemistry, Physical
Lorenz J. Falling, Juan J. Velasco-Velez, Rik Mom, Axel Knop-Gericke, Robert Schloegl, Detre Teschner, Travis E. Jones
Summary: With the use of new experimental and computational techniques, increasingly sophisticated models are being employed to study the oxygen evolution reaction (OER) in order to gain a better understanding of its mechanisms. A six-rung ladder of complexity has been defined to evaluate the depth of our understanding of the OER on steady-state catalyst surfaces and identify areas for improvement.
CURRENT OPINION IN ELECTROCHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Thomas J. Penfold, J. Olof Johansson, Julien Eng
Summary: Manipulating magnetic materials is essential for hard drive technology. The development of ultrafast femtosecond lasers has allowed for the control of magnetic properties using ultrashort pulses of light, leading to the study of ultrafast magnetisation dynamics. However, understanding the microscopic mechanisms involved in this field remains a major challenge, especially for single-molecule magnets. This review discusses recent experimental and theoretical developments in understanding and controlling the ultrafast dynamics of molecular photomagnets, as well as outlining future directions for research.
COORDINATION CHEMISTRY REVIEWS
(2023)
Review
Biology
David Raubenheimer, Rong Hou, Yunlong Dong, Cuiru Ren, Zhenwei Cui
Summary: This article discusses the complex relationship between diet, nutrition, animal biology, and food environments. It explores both laboratory and field studies that aim to unravel the links between dietary components, ecology, feeding, and physiological processes. The article highlights the limitations of laboratory studies in establishing connections with realistic ecological environments, while also presenting observational field studies that suggest similar feeding mechanisms in the wild. The importance of establishing causal links between feeding, resource variation, and physiological processes in the wild is emphasized. Two studies investigating temperate primates are also discussed, which utilize seasonal environmental variations to strengthen causal inference and understand nutrient processing dynamics.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Behavioral Sciences
Joshua Kellman, Karam Radwan
Summary: Play is a complex and diverse set of behaviors that can range from social to object-oriented to locomotor play. Social play optimizes flexibility and creativity by engaging multiple neural pathways, balancing safety versus danger, automatized versus learned reactions, and gating relevant versus less relevant stimuli.
NEUROSCIENCE AND BIOBEHAVIORAL REVIEWS
(2022)
Article
Physics, Particles & Fields
S. Holz, J. Plenter, C. W. Xiao, T. Dato, C. Hanhart, B. Kubis, U-G Meissner, A. Wirzba
Summary: The study suggests that high-quality data on the e(+)e(-) -> pi(+) pi(-) eta reaction can determine the doubly-virtual form factor eta -> gamma*gamma* in a model-independent manner with controlled accuracy. This is crucial for evaluating the hadronic light-by-light scattering contribution to the muon's anomalous magnetic moment. Analyzing existing data for e(+) e(-) -> pi(+) pi(-) eta with total energies squared k(2) > 1GeV(2) shows that the a(2) meson effect disrupts the commonly used factorization ansatz in the doubly-virtual form factor, highlighting the need for better data.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Review
Chemistry, Multidisciplinary
Mohammad Faizan, Fadime Karabulut, Pravej Alam, Mohammad Yusuf, Sadia Haque Tonny, Muhammad Faheem Adil, Shafaque Sehar, S. Maqbool Ahmed, Shamsul Hayat
Summary: The increasing concentration of heavy metals (HMs) due to human activities is a serious problem, affecting plants along with other abiotic stresses. Meeting the nutritional demands of a growing population under these adverse conditions is crucial. Soil remediation of HMs is costly and unsustainable, but applying nanobionics to enhance plant stress tolerance shows promise. This review highlights the impact of nanobionics on plant physiological traits, growth indices, and discusses associated concerns and stress tolerance.
Review
Physics, Multidisciplinary
Jean-Marc Richard, Alfredo Valcarce, Javier Vijande
Article
Physics, Nuclear
H. Garcilazo, A. Valcarce, J. Vijande
Review
Physics, Nuclear
H. Garcilazo, A. Valcarce, J. Vijande
INTERNATIONAL JOURNAL OF MODERN PHYSICS E
(2020)
Article
Astronomy & Astrophysics
E. Hernandez, J. Vijande, A. Valcarce, Jean-Marc Richard
Article
Engineering, Biomedical
Christian Valdes-Cortez, Iymad Mansour, Mark J. Rivard, Facundo Ballester, Ernesto Mainegra-Hing, Rowan M. Thomson, Javier Vijande
Summary: This study estimated the Type B uncertainties in absorbed-dose calculations arising from the implementation of low-energy photon cross-sections in three state-of-the-art Monte Carlo codes. The results showed that there are significant uncertainties in absorbed dose and photon-fluence spectra across different energy ranges due to the variations in cross-section implementations.
PHYSICS IN MEDICINE AND BIOLOGY
(2021)
Article
Multidisciplinary Sciences
Humberto Garcilazo, Alfredo Valcarce
Summary: In this study, a comprehensive investigation into the decay width of multiquark states using a coupled-channel approach was conducted, revealing that the decay width can offer detailed information about the nature of resonances. The symmetrical situation between meson- and baryon-like multiquarks was emphasized, and the existence of narrow resonances with large phase spaces was taken into account. The research also indicated that the decay width of multiquark states is determined by the mass difference with the formation channel, with tighter bindings leading to larger decay widths.
Article
Multidisciplinary Sciences
Humberto Garcilazo, Alfredo Valcarce
Summary: JLab has found indications of a possible sigma NN resonance at (3.14 +/- 0.84) -i(2.28 +/- 1.2) MeV. Using previous models, we have derived theoretical evidence of a quasibound state in the lambda NN - sigma NN system, which is in reasonable agreement with experimental findings.
Article
Astronomy & Astrophysics
H. Garcilazo, A. Valcarce
Summary: This study investigates hidden-charm pentaquarks by studying the dynamical correlations between heavy quarks. A pattern that matches experimental data is obtained and extended to other flavor sectors. A detailed comparison with literature and experimental data is made, and the predictions are useful in differentiating models of multiquark system dynamics.
Article
Astronomy & Astrophysics
H. Garcilazo, A. Valcarce
Summary: In this study, we investigate hidden-flavor pentaquarks based on a constituent quark-model and compare our results with previous studies and experimental data. Our findings reveal a distinct pattern for open-flavor and hidden-flavor pentaquarks, which supports the existence of quarkonia bound to nuclei.
Article
Astronomy & Astrophysics
Jean-Marc Richard, Alfredo Valcarce, Javier Vijande
Summary: The study shows that relativistic corrections to the kinetic energy can lower the binding energy of multiquark states, requiring a parameter retuning of the model. Tetraquarks with double heavy flavor become more stable at higher ratios of heavy to light quark masses, while all-heavy tetraquarks remain unstable when a relativistic form of kinetic energy is adopted.
Proceedings Paper
Quantum Science & Technology
Javier Vijande, Jean-Marc Richard, Alfredo Valcarce
RECENT PROGRESS IN FEW-BODY PHYSICS
(2020)
