Month: September 2022

STRANGE MATTER STARS. “Strange matter that is only stable at high pressure. Under the broader definition, strange matter might occur inside neutron stars, if the pressure at their core is high enough (i.e. above the critical pressure). At the sort of densities and high pressures we expect in the center of a neutron star, the quark matter would probably be strange matter.” https://en.m.wikipedia.org/wiki/Strange_matter View in LinkedIn

NEUTRON STARS STRANGE MATTER. “It could conceivably be non-strange quark matter, if the effective mass of the strange quark were too high. Charm quarks and heavier quarks would only occur at much higher densities.” https://en.m.wikipedia.org/wiki/Strange_matter View in LinkedIn

ENERGY SHELLS. “Strange matter comes about as a way to relieve degeneracy pressure. The Pauli exclusion principle forbids fermions such as quarks from occupying the same position and energy level. When the particle density is high enough that all energy levels below the available thermal energy are already occupied, increasing the density further requires raising some to higher, unoccupied energy levels. This need for energy to cause compression manifests as a pressure.” https://en.m.wikipedia.org/wiki/Strange_matter View in LinkedIn

NOT KNOWN. “A neutron star with a quark matter core is often called a hybrid star. However, it is hard to know whether hybrid stars really exist in nature because physicists currently have little idea of the likely value of the critical pressure or density. It seems plausible that the transition to quark matter will already have occurred when the separation between the nucleons becomes much smaller than their size, so the critical density must be less than about 100 times nuclear saturation density.” https://en.m.wikipedia.org/wiki/Strange_matter View in LinkedIn

TRANSITION TO QUARKS. “But a more precise estimate is not yet available, because the strong interaction that governs the behavior of quarks is mathematically intractable, and numerical calculations using lattice QCD are currently blocked by the fermion sign problem.” https://en.m.wikipedia.org/wiki/Strange_matter View in LinkedIn

STABILITY. “Strange matter that is stable at zero pressure. If the "strange matter hypothesis" is true then nuclear matter is metastable against decaying into strange matter. The lifetime for spontaneous decay is very long, so we do not see this decay process happening around us.” https://en.m.wikipedia.org/wiki/Strange_matter View in LinkedIn

STRANGE MATTER HYPOTHESIS. “Under this hypothesis there should be strange matter in the universe: (1) Quark stars (often called "strange stars") consist of quark matter from their core to their surface. They would be several kilometers across, and may have a very thin crust of nuclear matter. (2) Strangelets are small pieces of strange matter, perhaps as small as nuclei. They would be produced when strange stars are formed or collide, or when a nucleus decays.” https://en.m.wikipedia.org/wiki/Strange_matter View in LinkedIn