Search for oscillations of fundamental constants using molecular spectroscopy

Oswald, R.; Nevsky, A.; Vogt, V.; Schiller, S.; Figueroa, N. L.; Zhang, K.; Tretiak, O.; Antypas, D.; Budker, D.; Banerjee, A.; Perez, G.

doi:10.48550/arxiv.2111.06883

Cited by 8 publications

(20 citation statements)

References 44 publications

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“…11 See also the results from the WReSL experiment on the couplings of ultralight scalar dark matter to photons and electrons oscillating at higher frequencies [226], and recent experimental bounds on the couplings to the up, down, and strange quarks and to gluons obtained using molecular spectroscopy [227]. [181], MIGA [182] and ELGAR [180] experiments, and of the AEDGE space-borne concept [5].…”

Section: Probes Of General Relativitymentioning

confidence: 99%

Cold Atoms in Space: Community Workshop Summary and Proposed Road-Map

Alonso,

Alpigiani,

Altschul

et al. 2022

Preprint

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We summarize the discussions at a virtual Community Workshop on Cold Atoms in Space concerning the status of cold atom technologies, the prospective scientific and societal opportunities offered by their deployment in space, and the developments needed before cold atoms could be operated in space. The cold atom technologies discussed include atomic clocks, quantum gravimeters and accelerometers, and atom interferometers. Prospective applications include metrology, geodesy and measurement of terrestrial mass change due to, e.g., climate change, and fundamental science experiments such as tests of the equivalence principle, searches for dark matter, measurements of gravitational waves and tests of quantum mechanics. We review the current status of cold atom technologies and outline the requirements for their space qualification, including the development paths and the corresponding technical milestones, and identifying possible pathfinder missions to pave the way for missions to exploit the full potential of cold atoms in space. Finally, we present a first draft of a possible roadmap for achieving these goals, that we propose for discussion by the interested cold atom, Earth Observation, fundamental physics and other prospective scientific user communities, together with ESA and national space and research funding agencies. research areas. As anticipated for a Europe-based event, about 80% of the registrations are from European countries, as seen in the lower right panel of Fig. 1, but there is also significant North American and Asian participation.This community provides the backbone for long-term planning and the support needed to see the challenging cold atom missions foreseen in the road-map through to their successful completions. The participants display an excellent and diverse mix of expertise, building an outstanding basis for the success of the workshop and the development of the corresponding road-map, which defines possible interim and long-term scientific goals and outlines technological milestones. Section 2 is an introduction to our document, Sections 3 to 5 discuss our main science themes, namely atomic clocks, Earth Observation and fundamental physics, Section 6 discusses the technology developments required before quantum sensors can be deployed in space, Section 7 summarises the discussions during the Workshop, and in Section 8 we outline the corresponding Community road-map.

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Section: Probes Of General Relativitymentioning

confidence: 99%

Cold Atoms in Space: Community Workshop Summary and Proposed Road-Map

Alonso,

Alpigiani,

Altschul

et al. 2022

Preprint

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“…Variations of m (eff) f and α (eff) can be measured with atomic clocks, interferometers [43,46,[48][49][50][51][52][53], or generally by direct comparison of systems with different dependence on these fundamental constants [27,47,[54][55][56].…”

Section: Introductionmentioning

confidence: 99%

Intensity interferometry for ultralight bosonic dark matter detection

Masia‐Roig¹,

Figueroa²,

Ariday³

et al. 2022

Preprint

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Ultralight bosonic dark matter (UBDM) can be described by a classical wave-like field oscillating at the Compton frequency of the bosons. If a measurement scheme for the direct detection of UBDM interactions is sensitive to a signature quadratic in the field, then there is a near-zero-frequency (dc) component of the signal. Thus, a detector with a given finite bandwidth can be used to search for bosons with Compton frequencies many orders of magnitude larger than its bandwidth. This opens the possibility of a detection scheme analogous to Hanbury Brown and Twiss interferometry. Assuming that the UBDM is virialized in the gravitational potential, for example of the Milky Way, the random velocities produce slight deviations from the Compton frequency. These result in stochastic fluctuations of the intensity on a time scale determined by the spread in velocities. In order to mitigate ubiquitous local low-frequency noise, a network of sensors can be used to search for the stochastic intensity fluctuations by measuring cross-correlation between the sensors. This method is inherently broadband, since a large range of Compton frequencies will have a nearzero-frequency component within the sensor bandwidth that can be searched for simultaneously. Experiments with existing clock and magnetometer networks have sufficient sensitivity to search a broad range of unexplored parameter space.

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“…In addition, the length of solid bodies, which is proportional to the Bohr radius α B = (α m e ) −1 depends on the same constants. Atomic and optical techniques are sensitive means to look for oscillations in α and m e [18], for example, by probing the frequencies of atomic transitions [7,19] in atomic clocks [20][21][22][23], and comparing these to the resonance frequency of optical cavities [24,25], via laser interferometry [26,27], comparison of two cavities [28], gravitationalwave detectors [29][30][31] and other methods [32,33].…”

mentioning

confidence: 99%

“…This is because an EP-violating fifth-force involves virtual exchange of the scalar particle, that is independent of UDM. There is another reason why direct UDM searches and EP tests can be considered complementary to each other: in part of the parameter space of UDM-SM couplings probed by EP tests, their sensitivity is reduced compared to direct searches [33], as we discuss below.…”

mentioning

confidence: 99%

Improved bounds on ultralight scalar dark matter in the radio-frequency range

Tretiak,

Zhang,

Figueroa

et al. 2022

Preprint

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We present a search for fundamental constant oscillations in the range 20 kHz−100 MHz, that may arise within models for ultralight dark matter (UDM). Using two independent, significantly upgraded optical-spectroscopy apparatus, we achieve up to ×1000 greater sensitivity in the search relative to previous work. We report no observation of UDM and thus constrain respective couplings to electrons and photons within the investigated UDM particle mass range 8 • 10 −11 − 4 • 10 −7 eV. The constraints significantly exceed previously set bounds, and as we show, may surpass in future experiments those provided by equivalence-principle experiments in a specific case regarding the combination of UDM couplings probed by the latter.

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Search for oscillations of fundamental constants using molecular spectroscopy

Cited by 8 publications

References 44 publications

Cold Atoms in Space: Community Workshop Summary and Proposed Road-Map

Cold Atoms in Space: Community Workshop Summary and Proposed Road-Map

Intensity interferometry for ultralight bosonic dark matter detection

Improved bounds on ultralight scalar dark matter in the radio-frequency range

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