The main problems of canonical quantum cosmology are the following

The main problems of canonical quantum cosmology are the following: The singularity. The Wheeler-DeWitt equation does not remove the singularity, although in some cases the solutions avoid the singularity due to the effective potential as we have seen. In short, canonical quantum gravity is not well defined. The models of canonical quantum cosmology do only apply on a semiclassical approximation...

Cosmic Seeding

Most of the universe's heavy elements, including the iron central to life itself, formed early in cosmic history and spread throughout the universe, according to a new study of the Perseus Galaxy Cluster using Japan's Suzaku satellite. Suzaku study points to early cosmic 'seeding': http://phy.so/302434001 (Phys.org) —Most of the universe's heavy elements, including the iron central to life...

Graviton

I have been refreshing myself on quantum gravity, renormalization and the concept of gravitons being experimentally confirmed all morning. This is an interesting article I found on how physicist could find the highly theoretical particle called the graviton. They could use a particle accelerator to create a proton antiproton collision. This collision would result into gravitons decaying into standard...

Quantum Tunneling

Quantum Tunneling: A World Stranger Than Science Fiction Think for a moment about a ball rolling up a hill. If you don’t push hard enough, then it will not roll over the hill. This makes sense classically. However, in quantum mechanics, an object does not behave like a classical object (such as ball, or you, or I, or any matter in the universe...

Scientists reveal cosmic roadmap to galactic magnetic field

Scientists reveal cosmic roadmap to galactic magnetic field: http://phy.so/311514082 Scientists on NASA's Interstellar Boundary Explorer (IBEX) mission, including a team leader from the University of New Hampshire, report that recent, independent measurements have validated one of the mission's signature findings—a mysterious "ribbon" of energy and particles at the edge of our solar system...

Nuclear-atomic overlap for the isotope thorium-229

Nuclear-atomic overlap for the isotope thorium-229: http://phy.so/311851967 More than 99.9% of the mass of any atom is concentrated into a quadrillionth of its volume, the part occupied by the nucleus. Unimaginably small, dense and energetic, atomic nuclei are governed by laws quite distinct from those that regulate atomic electrons, which constitute the outer part of atoms and which are immediately...

Standard Model of Fundamental Particles and Interactions.

Standard Model of Fundamental Particles and Interactions. (But without the Higgs boson, most certainly because it wasn't discovered yet when this poster was created). Link to high res here: http://www.phy.duke.edu/research/NPTheory/particle_chart2.jp...