Category: Physics and Astronomy
Bootstrap bounds constrain supersymmetric quantum mechanics
What the study found The study found that the quantum-mechanics bootstrap can be applied to supersymmetric quantum mechanics (SUSY QM) and to the Marinari-Parisi matrix model, producing rigorous bounds on ground-state data. In cases where supersymmetry is spontaneously broken, the bounds apply to the lowest-energy normalizable eigenstate. Why the authors say this matters The authors…
2HDM-I can explain 650 GeV and 95 GeV anomalies
What the study found The authors report that the 2-Higgs Doublet Model Type-I (2HDM-I), a theory with two Higgs boson fields and a softly broken symmetry, can explain the reported 650 GeV and 95 GeV anomalies. Why the authors say this matters The study suggests that these anomalies, seen in Large Hadron Collider (LHC) and…
Laser-plasma electron beams showed favorable deep-dose distribution
What the study found Polychromatic very high-energy electron (VHEE) beams generated by a laser-plasma accelerator and delivered through a beamline were found to achieve favorable dose distribution for reaching deep areas inside a phantom. Why the authors say this matters The authors say this work helps explore and optimize laser-plasma-accelerator-generated VHEE radiotherapy, and they present…
Frictional contact model adds thermal effects in colloidal simulations
What the study found The study derives a thermodynamically consistent model for frictional contacts in colloidal systems, including the correct fluctuation-dissipation relation for both linear and nonlinear instantaneous frictional contact interactions. The authors also introduce a generalized class of dissipative particle dynamics (DPD, a simulation thermostat method) thermostats with rotation-translation coupling. Why the authors say…
Minimal asymmetric dark matter model uses Higgs-portal mediation
What the study found The study presents a minimal asymmetric dark matter model in which the dark sector contains a stable neutral Dirac fermion X and a real scalar mediator ϕ, with the mediator coupled to the Standard Model through a Higgs portal. The authors say that if dark and baryonic asymmetries are of comparable…
Two radio shells likely trace galaxy merger shocks
What the study found The study reports two intersecting radio shells, called ORC J1841–6547 or ORC 6, that are likely radio relics around a compact galaxy group. The authors say these shells may be shock-energised remnants linked to galaxy mergers. Why the authors say this matters The authors conclude that at least some odd radio…
Review compares muscle-stimulation methods for biohybrid robots
What the study found This review says prior studies on muscle-driven biohybrid robots for walking and crawling can be organized by three muscle-stimulation techniques: electrical field, optical, and neuromuscular junction-based stimulation. It also describes different walker and crawler models, their design principles, and their operating mechanisms. Why the authors say this matters The authors say…
Solar prominences formed self-consistently in 3D simulations
What the study found The study found that solar prominences can form self-consistently in fully three-dimensional simulations when the magnetic field is set with appropriate initial conditions. In the simulations, a prominence began with a random ejection of dense plasma seed material from the chromosphere, the Sun’s lower atmospheric layer, into the corona. Why the…
Non-equilibrium condensation matches chondrite mineral classes
What the study found Chondrite precursors may have formed through kinetic non-equilibrium condensation rather than only equilibrium processes. The model results suggest that different cooling rates and pressures can produce three mineralogical types, with more departure from equilibrium leading to more oxidized and hydrous mineralogies. Why the authors say this matters The authors say this…
Mars clay-bearing rocks yielded more than 20 organic molecules
What the study found The study found more than 20 organic molecules in clay-bearing sandstone from the Knockfarrill Hill member of Glen Torridon in Gale crater on Mars. The authors report that these molecules were detected in situ by the Sample Analysis at Mars (SAM) instrument suite on the Curiosity rover after a tetramethylammonium hydroxide…
