6 An open quantum system approach to EPR correlations in K 0 K̄ 0 system

Violation of CPT and Quantum Mechanics in the K 0 – K̄ 0 System

We reconsider the model of quantum mechanics violation in theK0–K̄0 system, due to Ellis, Hagelin, Nanopoulos, and Srednicki, in which CP and CPT -violating signatures arise from the evolution of pure states into mixed states. We present a formalism for computing time-dependent asymmetries in this model and show that present data constrains its parameters significantly. In the future, this model...

Polarization of vacuum in the decays of neutral kaons

It is considered the state of K before the decay as that embedded into the vacuum of +K̄ − K̄. Since the state of K S has the lifeitme τS, and the state of K L has the lifeitme τL, the vacuum of +K̄ 0 − K̄ is polarized. Due to the polarization of the vacuum, 2τS/τL of K 0 S decay with the delay ≈ τL. Thus CP-invariance holds true in the decays of neutral kaons. As known [1] strange K and K̄ mesons d...

ar X iv : q ua nt - p h / 06 04 06 4 v 1 1 0 A pr 2 00 6 RELATIONAL EPR

We argue that EPR-type correlations do not entail any form of “non-locality”, when viewed in the context of a relational interpretation of quantum mechanics. The abandonment of strict Einstein realism advocated by this interpretation permits to reconcile quantum mechanics, completeness, (operationally defined) separability, and locality.

QCD Corrections for the K 0 − K̄ 0 and B 0 − B̄ 0 System

Quantum cryptography using continuous variable Einstein-Podolsky-Rosen correlations and quadrature phase amplitude measurements

Correlations of the type discussed by EPR in their original 1935 paradox for continuous variables exist for the quadrature phase amplitudes of two spatially separated fields. These correlations were experimentally reported in 1992. We propose to use such EPR beams in quantum cryptography, to transmit predetermined messages in such a way that the receiver and sender may later determine whether e...