Month: September 2022

SIMULATIONS. “Laboratory experiments with high-energetic heavy-ion collisions offer the opportunity to explore fundamental properties of nuclear matter, such as the high-density equation-of-state, which governs the structure and dynamics of cosmic objects and phenomena like neutron stars, supernova explosions, and neutron star mergers.” https://lnkd.in/dF38pNe View in LinkedIn

UNKNOWN STATES OF MATTER. “The structure of the QCD phase diagram in the region of large baryon chemical potential is essentially unknown. Exotic phases of QCD matter have been proposed, such as quarkyonic matter, which can be considered as a Fermi gas of free quarks, with all thermal excitations permanently confined. In addition to these conjectured landmarks, figure 1 indicates also the regions of cosmic matter like neutron stars and neutron star mergers, which are located at large baryon-chemical potentials, low temperatures, and finite isospin chemical potentials.” (QCD = quark matter). https://lnkd.in/dF38pNe View in LinkedIn

RESORTING TO MATHS. “Various calculations have been performed which indicate phase transitions from hadronic to quark matter in the core of massive neutron stars, in neutron star mergers or even in core collapse supernovae of very massive stars.” https://lnkd.in/dF38pNe View in LinkedIn

NEUTRON STAR CORES. “Ordinary nuclei, made up of up and down quarks, may dissolve their boundaries and transit to an SQM phase (consisting of up, down, and strange quarks) if the nuclei experience high-enough pressure. Strange matter in bulk is stable. Even small chunks of strange matter with baryon number lower than 10(7), called "strangelets," can be stable due to surface tension.” (SQM = Strange-quark matter). https://lnkd.in/ddQpCwa View in LinkedIn

ALICE IN WONDERLAND. “If the SQM hypothesis is correct, then all observed pulsars may actually be SSs but not neutron stars, due to the contamination process by strange nuggets in the universe. SSs can exist in various forms, such as bare SSs or SSs with a normal baryonic crust.” (SQM = Strange-quark matter). (SS = strange stars). https://lnkd.in/ddQpCwa View in LinkedIn

“DEEP MACHINE LEARNING is based not on symbols, rules, or procedures such as “if this, then that” but on exposure of many examples to layered networks of artificial neurons that have thousands of connections with one another. It has been shown that such systems can, without supervision, form generalizations of patterns that recur in the examples.” https://lnkd.in/dzHM-4X View in LinkedIn

The first violets of the year emerge coincident with almond blossom and the first mosquito, in a sudden rush with an upsurge in warm weather. Life will find a way! View in LinkedIn

COSMIC LABS. “Formed in the aftermath of gravitational core-collapse supernova explosions, neutron stars are unique cosmic laboratories for probing the properties of matter under extreme conditions that cannot be reproduced in terrestrial laboratories.” https://lnkd.in/dm-4wAJ View in LinkedIn

EXTRAORDINARY PHYSICS. “The interior of a neutron star, endowed with the highest magnetic fields known and with densities spanning about ten orders of magnitude from the surface to the centre, is predicted to exhibit various phases of dense strongly interacting matter, whose physics is reviewed in this chapter.” https://lnkd.in/dm-4wAJ View in LinkedIn

BEYOND OUR GRASP. “A number of years ago we stumbled on the present minimal viscosity explanation for the linear resistivity, playing with the black holes. The qualitative nature of the physics at work is however stunningly different from anything in the condensed matter textbooks. At first encounter, the claims may sound outrageous. The electron fluid in the strange metal is claimed to be governed by hydrodynamics, it flows like water.” https://lnkd.in/dqysHFG View in LinkedIn