Mon, 02/06/2012 - 22:59 — semyon

In the paper "Entanglement can Completely Defeat Quantum Noise"

(Chen et al. PRL 107, 250504 (2011)) the question of information transport is

considered. For two extremly noisy channels (that cannot transmit any

classical information), the theoretical possibility of transmission thru their

combination with the help of entanglement is shown. That means that

entanglement can help to defeat quantum noise.

Black hole evaporation in Loop Quantum Gravity (LQG) and the usual

Hawking behavior can be distinguished claims the paper by Barrau et

al. PRL 107, 251301 (2011). It is from some point of view uncommon

statement, as low energy limit of LQG is GR and some quantities, such

as black hole entropy, coincide, so trivially the spectrum should (but

presumably not) coincide too.

The question at the intersection of two fields: biology and physics,

is considered in PRL 107, 258101 (2011). The fact known from

Leonardo da Vinci that diameter of the trunk is on average equal to the sum of

diameters of all branches is tried to be proven. From the ideas of

endurance of the construction is come out that such structure help

trees to resist wind loads.

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