Metriplectic geometry for gravitational subsystems

Kabel, Viktoria; Wieland, Wolfgang

doi:10.1103/physrevd.106.064053

Cited by 7 publications

(12 citation statements)

References 47 publications

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“…Systematic uncertainties corresponding to other very loose selections are negligible, where the total uncertainty is 3.1%. With systematic uncertainties considered, the flux upper limit of 2 3 𝑒 FCP is found to be Φ < 6.2 × 10 −10 cm −2 sr −1 s −1 [20].…”

Section: Resultsmentioning

confidence: 95%

“…Here we conduct a search for FCPs based on on-orbit data collected with DAMPE over a period of five years. The full analysis is described in the reference [20].…”

Section: Dampe Missionmentioning

confidence: 99%

“…Searching for fractionally charged particles Chengming Liu The distribution of PSD-STK charge for on-orbit data [20]. The red lines indicate the signal region for FCPs.…”

Section: Pos(icrc2023)149mentioning

confidence: 99%

“…Figure 4:The charge distributions from the PSD and STK and the definition of the signal region[20]. The charge distributions for the PSD and STK are shown in panels (a) and (b), respectively.…”

mentioning

confidence: 99%

“…Figure 5:The distribution of PSD-STK charge for on-orbit data[20]. The red lines indicate the signal region for FCPs.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Latest results on searching for fractionally charged particles with the DAMPE experiment

Liu¹,

Alemanno²,

Altomare³

et al. 2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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The existence of fractionally charged particles (FCP) is foreseen in extensions of or beyond the Standard Model of particle physics. Most of the previously conducted searches for FCPs in cosmic rays were based on experiments underground or at high altitudes. However, there have been few searches for FCPs in cosmic rays carried out in orbit other than AMS-01 flown by a space shuttle and BESS by a balloon at the top of the atmosphere. In this study, we conduct an FCP search in space based on on-orbit data obtained using the Dark Matter Particle Explorer (DAMPE) satellite over a period of five years. Unlike underground experiments, which require an FCP energy of the order of hundreds of GeV, our FCP search starts at only a few GeV. An upper limit of 6.2 × 10 −10 cm −2 sr −1 s −1 is obtained for the flux. Our results demonstrate that DAMPE exhibits higher sensitivity than experiments of similar types by three orders of magnitude that more stringently restricts the conditions for the existence of FCP in primary cosmic rays.

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Section: Resultsmentioning

confidence: 95%

“…Here we conduct a search for FCPs based on on-orbit data collected with DAMPE over a period of five years. The full analysis is described in the reference [20].…”

Section: Dampe Missionmentioning

confidence: 99%

“…Searching for fractionally charged particles Chengming Liu The distribution of PSD-STK charge for on-orbit data [20]. The red lines indicate the signal region for FCPs.…”

Section: Pos(icrc2023)149mentioning

confidence: 99%

mentioning

confidence: 99%

“…Figure 5:The distribution of PSD-STK charge for on-orbit data[20]. The red lines indicate the signal region for FCPs.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Latest results on searching for fractionally charged particles with the DAMPE experiment

Liu¹,

Alemanno²,

Altomare³

et al. 2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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Corner Symmetry and Quantum Geometry

Freidel,

Geiller,

Wieland

2023

Handbook of Quantum Gravity

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The dressing field method for diffeomorphisms: a relational framework

André

2024

J. Phys. A: Math. Theor.

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The dressing field method (DFM) is a tool to reduce gauge symmetries. Here we extend it to cover the case of diffeomorphisms. The resulting framework is a systematic scheme to produce Diff ( M ) -invariant objects, which has a natural relational interpretation. Its precise formulation relies on a clear understanding of the bundle geometry of field space. By detailing it, among other things we stress the geometric nature of field-independent and field-dependent diffeomorphisms, and highlight that the heuristic ‘extended bracket’ for field-dependent vector fields often featuring in the covariant phase space literature can be understood as arising from the Frölicher-Nijenhuis bracket. Furthermore, by articulating this bundle geometry with the covariant phase space approach, we give a streamlined account of the elementary objects of the (pre)symplectic structure of a Diff ( M ) -theory: Noether charges and their bracket, as induced by the standard prescription for the presymplectic potential and 2-form. We give conceptually transparent expressions allowing to read the integrability conditions and the circumstances under which the bracket of charge is Lie, and the resulting Poisson algebras of charges are central extensions of the Lie algebras of field-independent ( diff ( M ) ) and field-dependent vector fields. We show that, applying the DFM, one obtains a Diff ( M ) -invariant and manifestly relational formulation of a general relativistic field theory. Relying on results just mentioned, we easily derive the ‘dressed’ (relational) presymplectic structure of the theory. This reproduces or extends results from the gravitational edge modes and gravitational dressings literature. In addition to simplified technical derivations, the conceptual clarity of the framework supplies several insights and allows us to dispel misconceptions.

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Metriplectic geometry for gravitational subsystems

Cited by 7 publications

References 47 publications

Latest results on searching for fractionally charged particles with the DAMPE experiment

Latest results on searching for fractionally charged particles with the DAMPE experiment

Corner Symmetry and Quantum Geometry

The dressing field method for diffeomorphisms: a relational framework

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