Positronium oscillations to mirror world revisited

Demidov, Sergei; Gorbunov, D.; Tokareva, Anna

doi:10.1103/physrevd.85.015022

Cited by 19 publications

(26 citation statements)

References 73 publications

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“…Moreover, because it has no net additive quantum numbers, Ps can in principle couple to Dark Matter or other exotic systems that provide a mechanism for invisible decays [216][217][218][219]. Many possible scenarios have been proposed and studied in experiments, including Ps coupling to extra dimensions, unparticles, milli-charged particles, gauge bosons or mirror matter [220][221][222][223][224][225][226]. While limits for several of these processes have been set in numerous measurements, no anomalous signals have so far been detected.…”

Section: Ps Annihilationmentioning

confidence: 99%

Experimental progress in positronium laser physics

2018

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Abstract. The field of experimental positronium physics has advanced significantly in the last few decades, with new areas of research driven by the development of techniques for trapping and manipulating positrons using Surko-type buffer gas traps. Large numbers of positrons (typically ≥10 6 ) accumulated in such a device may be ejected all at once, so as to generate an intense pulse. Standard bunching techniques can produce pulses with ns (mm) temporal (spatial) beam profiles. These pulses can be converted into a dilute Ps gas in vacuum with densities on the order of 10 7 cm −3 which can be probed by standard ns pulsed laser systems. This allows for the efficient production of excited Ps states, including long-lived Rydberg states, which in turn facilitates numerous experimental programs, such as precision optical and microwave spectroscopy of Ps, the application of Stark deceleration methods to guide, decelerate and focus Rydberg Ps beams, and studies of the interactions of such beams with other atomic and molecular species. These methods are also applicable to antihydrogen production and spectroscopic studies of energy levels and resonances in positronium ions and molecules. A summary of recent progress in this area will be given, with the objective of providing an overview of the field as it currently exists, and a brief discussion of some future directions.

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Section: Ps Annihilationmentioning

confidence: 99%

Experimental progress in positronium laser physics

2018

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“…The net oscillation effect can be suppressed by these processes, e.g. scattering with the gas molecules or with the cavity walls [30]. These effects must be taken into consideration when performing the experiment because they effectively reduce the experimental sensitivity for extracting the mixing term.…”

Section: Experimental Methodsmentioning

confidence: 99%

Feasibility of Ortho-positronium Lifetime Studies with the J-PET Detector in Context of Mirror Matter Models

Krzemień¹,

Río²,

Kacprzak³

2020

Acta Phys. Pol. B

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“…In quantic theory, photon‐mirror photon kinetic mixing is described by the interaction Lagrangian density (L):

L = \frac{\in}{2} F^{μ ν} F_{μ ν}^{'}

where F μν is the field strength tensor for electromagnetism,

F_{μ ν}^{'}

is the field strength tensor for mirror electromagnetism, and ∈ is the coefficient of the kinetic mixing [ Foot , ]. The modification of the orthopositronium properties in a physics particle experiment demonstrates the implication of photon‐mirror photon kinetic mixing with a coefficient of ∈ ≤ 10 − 9 [ Demidov et al , ]. An effect of these interactions is that the mirror nuclei can interact with the ordinary nuclei and the mirror electrons can interact with ordinary electrons.…”

Section: Methodsmentioning

confidence: 99%

Geophysicochemical model of an ionospheric auroral gyroscope

Serban

Geicu

Serban³

2016

Earth and Space Science

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This study presents a geophysicochemical model of an ionospheric auroral gyroscope. The gyroscopic effect occurs due to the electromagnetic interaction in Earth's polar regions between two types of vertical cavity auroras: the herpolhodic cone (proton cavity aurora), operating in the cusp polar region, and two polhodic cones (an electronic cone and a protonic cone), operating in the aurora region. The ratio between the angular speeds of the herpolhodic and polhodic cones is established by the angle between Earth's rotational axis and the geomagnetic dipole axis. We have developed a theory of the ionospheric auroral gyroscope as a kinematic part of the terrestrial magnetosphere and ionosphere that enables a unified explanation of important macroscopic phenomena that occur at this level. Accordingly, we have explained the oval shape of the polar auroras, Schumann resonances, geomagnetic micropulsation excitation, and the structuring of Earth's areas of radiation. The terrestrial gravitomagnetic field and dark matter are implicated in the initiation and behavior of the auroral ionospheric gyroscope, both of which provide stability and accuracy. Viewed in a wider context, the ionospheric auroral gyroscope theory could offer a way to experimentally investigate dark matter on Earth. Furthermore, it may have a potential value as a predictive tool, providing information about the large earthquakes and Earth's phenomena.

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Positronium oscillations to mirror world revisited

Cited by 19 publications

References 73 publications

Experimental progress in positronium laser physics

Experimental progress in positronium laser physics

Feasibility of Ortho-positronium Lifetime Studies with the J-PET Detector in Context of Mirror Matter Models

Geophysicochemical model of an ionospheric auroral gyroscope

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