Phys. Rev. Focus27, 5 (2011) – Published February 4, 2011
Time travel isn’t forbidden by physical laws. A new consistency condition for time traveling quantum states eliminates any possibility of so-called grandfather paradoxes, in which a time-traveler kills her own ancestor.
Phys. Rev. Focus26, 25 (2010) – Published December 17, 2010
According to simulations, ultrashort electron pulses could serve as probes of the rapid motion of atomic or molecular electrons, such as the “breathing” of an excited atom or the shuttling of an electron between atoms in a molecule.
Phys. Rev. Focus26, 20 (2010) – Published November 12, 2010
Foraging animals or other randomly moving entities can more easily avoid each other by taking more long-distance jumps, according to theoretical results, which may also apply to epidemics and database searches.
Phys. Rev. Focus26, 18 (2010) – Published October 29, 2010
Atoms in graphite under high pressure appear to form a simple structure made of interconnected, four-atom rings, according to new computer simulations that were compared with previous experimental data.