Search for anomalous carbon atoms — evidence of violation of the Pauli principle during the period of nucleosynthesis

Barabash, A. S.; Kornoukhov, V. N.; Tsipenyuk, Yu. M.; Chapyzhnikov, B. A.

doi:10.1134/1.567831

Cited by 22 publications

(18 citation statements)

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“…e − I refers to an electron that is part of a current, e − f refers to an electron within the Fermi sea of a metal, and e − pp refers to an electron produced by pair production. Li,6 Li → 6B e + e…”

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confidence: 99%

An Improved Limit on Pauli-Exclusion-Principle Forbidden Atomic Transitions

et al. 2012

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We have examined the atomic theory behind recent constraints on the violation of the Pauli Exclusion Principle derived from experiments that look for X-rays emitted from conductors while a large current is present. We also re-examine the assumptions underlying such experiments. We use the results of these studies to assess pilot measurements to develop an improved test of the Principle. We present an improved limit of 1 2 β 2 < 2.6 × 10 −39 on the Pauli Exclusion Principle. This limit is the best to date for interactions between a system of fermions and a fermion that has not previously interacted with that given system. That is, for systems that do not obviously violate the Messiah-Greenberg symmetrization-postulate selection rule.

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confidence: 99%

An Improved Limit on Pauli-Exclusion-Principle Forbidden Atomic Transitions

et al. 2012

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“…In [56] a concrete calculation of Pauli-forbidden transition has been carried out on a non-commutative spacetime. It leads to the bound 10 24 TeV for the energy scale of noncommutativity when combined with limits on Pauli-forbidden transitions from [57,58,59,60,61]. This is a strong bound suggesting an energy scale beyond the Planck scale.…”

Section: Pauli-forbidden Transitionsmentioning

confidence: 95%

Quantum Fields on Noncommutative Spacetimes: Theory and Phenomenology

Balachandran

Ibort

Marmo

et al. 2010

SIGMA

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Abstract. In the present work we review the twisted field construction of quantum field theory on noncommutative spacetimes based on twisted Poincaré invariance. We present the latest development in the field, in particular the notion of equivalence of such quantum field theories on a noncommutative spacetime, in this regard we work out explicitly the inequivalence between twisted quantum field theories on Moyal and Wick-Voros planes; the duality between deformations of the multiplication map on the algebra of functions on spacetime F (R 4 ) and coproduct deformations of the Poincaré-Hopf algebra HP acting on F (R 4 ); the appearance of a nonassociative product on F (R 4 ) when gauge fields are also included in the picture. The last part of the manuscript is dedicated to the phenomenology of noncommutative quantum field theories in the particular approach adopted in this review. CPT violating processes, modification of two-point temperature correlation function in CMB spectrum analysis and Pauli-forbidden transition in Be 4 are all effects which show up in such a noncommutative setting. We review how they appear and in particular the constraint we can infer from comparison between theoretical computations and experimental bounds on such effects. The best bound we can get, coming from Borexino experiment, is 10 24 TeV for the energy scale of noncommutativity, which corresponds to a length scale 10 −43 m. This bound comes from a different model of spacetime deformation more adapted to applications in atomic physics. It is thus model dependent even though similar bounds are expected for the Moyal spacetime as well as argued elsewhere.

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“…Physicists have analyzed possible non-conservation of the electric charge, the CPT violation and Lorentz invariance. The problem under consideration was stimulated by the investigation of a possible violation of the Pauli exclusion principle [1].…”

Section: Introductionmentioning

confidence: 99%

Fast radiochemical extraction of carbon in photoactivation analysis of pure boron

Tsipenyuk

Chapyzhnikov

1999

Czech J Phys

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Special fast procedure for radiochemical extraction of carbon impurities from boron samples was developed. The procedure consists of alloying the sample in a mixture of KNO3 +KOH at 600 ~ dissolving of the cooled melt in water, and subsequent distillation of CO2 from the boiling acidic solution of HNO3. Time span of the whole procedure equals 25 min and provides more than one thousand-fold extraction of initial carbon impurity from the boron sample. Kinetics of the carbon extraction was measured with carbon-11 radiotracers which were induced in the investigated samples by the irradiation with 26 MeV bremsstrahlung. IntroductionBeginning with the pioneering works on the parity non-conservation in weak interactions, the problem of possible small violations of the fundamental physical principles has been constantly drawing much attention. Physicists have analyzed possible non-conservation of the electric charge, the CPT violation and Lorentz invariance. The problem under consideration was stimulated by the investigation of a possible violation of the Pauli exclusion principle [1].The exclusion principle declares that two or more fermions cannot exist in the same quantum state. In the simplest case, the violation of the Pauli principle in an atom leads to a transition of a valent electron to low-lying atomic shell that is favourable from the point of view of energy. The transition ofa valent electron from outer to inner shell means that such anomalous atom with atomic number Z will chemically behaves as an element with atomic number Z-1. This is a consequence of a general statement that elements with similar structures of outer electron shells have similar chemical properties. Therefore, if a violation of the Pauli exclusion principle does take place, an accumulation of anomalous atoms proceeds during the whole period of nucleosynthesis, and impurity of the anomalous atoms Z can be now found in nature in a chemical compounds of the element Z-1.The concentration of anomalous atoms in the host matter is maximized when the cosmic abundance of the mother element, Z+I, is large while that of element Z is small.On the basis of this arguments Novikov and Pomansky [2] pointed out that the most promising pair of atoms for such a type of an experiment is the pair carbon-boron because the carbon abundance in the Solar system is about six orders of magnitude higher than that of boron.

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Search for anomalous carbon atoms — evidence of violation of the Pauli principle during the period of nucleosynthesis

Cited by 22 publications

References 10 publications

An Improved Limit on Pauli-Exclusion-Principle Forbidden Atomic Transitions

An Improved Limit on Pauli-Exclusion-Principle Forbidden Atomic Transitions

Quantum Fields on Noncommutative Spacetimes: Theory and Phenomenology

Fast radiochemical extraction of carbon in photoactivation analysis of pure boron

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