scholarly journals Tests of CPT symmetry and quantum coherence with entangled neutral kaons at KLOE

2022 ◽  
Author(s):  
Riccardo D'Amico
Keyword(s):  
Quantum Coherence ◽  
Cpt Symmetry ◽  
Neutral Kaons

scholarly journals TESTING κ-POINCARÉ WITH NEUTRAL KAONS

2000 ◽  
Vol 15 (34) ◽  
pp. 2119-2127 ◽  
Author(s):  
GIOVANNI AMELINO-CAMELIA ◽  
FRANCO BUCCELLA
Keyword(s):  
Quantum Gravity ◽  
Gamma Rays ◽  
Experimental Tests ◽  
Neutral Kaon ◽  
Planck Length ◽  
Cpt Symmetry ◽  
Simple Estimate ◽  
System A ◽  
Neutral Kaons ◽  
Deformation Length

In recent work on experimental tests of quantum-gravity-motivated phenomenological models, a significant role has been played by the so-called "κ" deformations of Poincaré symmetries. Sensitivity to values of the relevant deformation length λ as small as 5×10-33 m has been achieved in recent analyses comparing the structure of κ-Poincaré symmetries with data on the gamma rays we detect from distant astrophysical sources. We investigate violations of CPT symmetry which may be associated with κ-Poincaré in the physics of the neutral-kaon system. A simple estimate indicates that experiments on the neutral kaons may actually be more λ-sensitive than the corresponding astrophysical experiments, and may already allow to probe values of λ of order the Planck length.

CPT SYMMETRY AND NEUTRAL KAONS

CP Violation ◽  
1989 ◽  
pp. 90-109
Author(s):  
V.V. BARMIN ◽  
V.G. BARYLOV ◽  
I.V. CHUVILO ◽  
G.V. DAVIDENKO ◽  
V.S. DEMIDOV ◽  
...  
Keyword(s):  
Cpt Symmetry ◽  
Neutral Kaons

CPT symmetry and neutral kaons

1984 ◽  
Vol 247 (2) ◽  
pp. 293-312 ◽  
Author(s):  
V.V. Barmin ◽  
V.G. Barylov ◽  
I.V. Chuvilo ◽  
G.V. Davidenko ◽  
V.S. Demidov ◽  
...  
Keyword(s):  
Cpt Symmetry ◽  
Neutral Kaons

scholarly journals IS THE STANDARD INTERPRETATION OF CPT-VIOLATION PARAMETER FOR NEUTRAL KAON COMPLEX WELL FOUNDED?

1998 ◽  
Vol 13 (06) ◽  
pp. 965-983 ◽  
Author(s):  
K. URBANOWSKI
Keyword(s):  
Neutral Kaon ◽  
Effective Hamiltonian ◽  
Cpt Violation ◽  
Matrix Elements ◽  
Cpt Symmetry ◽  
Standard Interpretation ◽  
Unstable Particles ◽  
Basic Assumptions ◽  
Neutral Kaons ◽  
Cpt Theorem

Basic assumptions necessary for the proof of the CPT theorem are considered. It is found that the CPT theorem is not valid for a physical system with unstable particles decaying exponentially. The Lee, Oehme and Yang (LOY) model of neutral kaons decay is discussed and the conclusion is drawn that CPT-transformation cannot be a symmetry in a system which contains the LOY model as a subsystem, and, thus this model is shown to be incapable of describing possible CPT-violation effects correctly. The approximate formulae for matrix elements of the effective Hamiltonian H‖ governing the time evolution in neutral kaons subspace (different from those obtained by means of the Weisskopf–Wigner method and used by LOY) and their implications for an interpretation of the standard CPT-violation parameter [Formula: see text] are considered. Within this approximation it is shown that [Formula: see text] in the system preserving CPT-symmetry and that δ=0 is possible only if [Formula: see text], where H is the total Hamiltonian of the system under consideration, that is, if the system does not preserve CPT-symmetry.

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