# CPT violation and decoherence in quantum gravity

@article{Mavromatos2004CPTVA, title={CPT violation and decoherence in quantum gravity}, author={Nick E. Mavromatos}, journal={Lecture Notes in Physics}, year={2004}, volume={669}, pages={245-320} }

In these lectures I review, in as much pedagogical way as possible, various theoretical ideas and motivation for violation of CPT invariance in some models of Quantum Gravity, and discuss the relevant phenomenology. Since the subject is vast, I pay particular emphasis on the CPT Violating decoherence scenario for quantum gravity, due to space-time foam. In my opinion this seems to be the most likely scenario to be realised in Nature, should quantum gravity be responsible for the violation of…

## 78 Citations

### CPT Violation: What and where to look for

- Physics
- 2005

In this review I classify the possible ways of CPT violation, and I describe briefly their phenomenology, in both terrestrial and astrophysical experiments, including antimatter factories, neutral…

### CPT Violation: Theory and Phenomenology

- Physics
- 2005

Invariance under the combined transformations of CPT (in any order) is guaranteed in Quantum Field Theory in flat space times due to a basic theorem (CPT Theorem). The currently used formalism of…

### Exploration of possible quantum gravity effects with neutrinos I: Decoherence in neutrino oscillations experiments

- Physics
- 2009

Quantum gravity may involve models with stochastic fluctuations of the associated metric field, around some fixed background value. Such stochastic models of gravity may induce decoherence for matter…

### Theory overview of testing fundamental symmetries

- PhysicsHyperfine Interactions
- 2014

I review first some theoretical motivations for violation of Lorentz and/or CPT Invariance. Although the latter symmetries may be violated in a quantum gravity setting, nevertheless there are…

### Theory overview of testing fundamental symmetries

- Physics
- 2014

I review first some theoretical motivations for violation of Lorentz and/or CPT Invariance. Although the latter symmetries may be violated in a quantum gravity setting, nevertheless there are…

### Quantum Gravity, CPT symmetry and entangled states

- Physics
- 2009

There may be unique (“smoking-gun”) signatures of the breakdown of CPT symmetry, induced in some models of Quantum Gravity entailing decoherence for quantum matter. Such effects can be observed in…

### CPT invariance and neutrino physics

- Physics
- 2010

CPT invariance in neutrino physics has attracted attention after the revival of the hypothetical idea that neutrino and antineutrino might have nonequal masses ($m_{\bar\nu} \neq m_{\nu}$) when…

### Unruh Effect for Mixed Neutrinos and the KMS Condition

- PhysicsUniverse
- 2022

The quantization of mixed (neutrino) fields in an accelerated background reveals a non-thermal nature for Unruh radiation, which can be fitted by a Tsallis-like distribution function. However, for…

### Lorentz symmetry breaking: phenomenology and constraints

- Physics
- 2015

In this talk I shall review several motivations for considering departures from exact Lorentz invariance and the different theoretical frameworks adopted to describe these departures. Among these, I…

## References

SHOWING 1-10 OF 321 REFERENCES

### CPT violating decoherence and LSND: A Possible window to Planck scale physics

- Physics
- 2005

Decoherence has the potential to explain all existing neutrino data including LSND results, without enlarging the neutrino sector. This particular form of CPT violation can preserve the equality of…

### Neutrinos and the Phenomenology of CPT Violation

- Physics
- 2004

In this talk I review briefly theoretical models and ideas on quantum gravity approaches entailing CPT violation. Then, I discuss various phenomenological tests of CPT violation using neutrinos,…

### On CPT symmetry: Cosmological, quantum gravitational and other possible violations and their phenomenology

- Physics
- 2003

I discuss various ways in which CPT symmetry may be violated, and their phenomenology in current or immediate future experimental facilities, both terrestrial and astrophysical. Specifically, I…

### Remarks on a proposed Super-Kamiokande test for quantum gravity induced decoherence effects

- Physics
- 2000

Lisi, Marrone, and Montanino have recently proposed a test for quantum gravity induced decoherence effects in neutrino oscillations observed at Super-Kamiokande. We comment here that their equations…

### Decoherence induced CPT violation and entangled neutral mesons

- Physics
- 2006

We discuss two classes of semimicroscopic theoretical models of stochastic spacetime foam in quantum gravity and the associated effects on entangled states of neutral mesons, signalling an intrinsic…