Citation

BibTex format

@article{Kaplan:2022:10.1103/PhysRevD.106.035032,
author = {Kaplan, DE and Mitridate, A and Trickle, T},
doi = {10.1103/PhysRevD.106.035032},
journal = {Physical Review D},
title = {Constraining fundamental constant variations from ultralight dark matter with pulsar timing arrays},
url = {http://dx.doi.org/10.1103/PhysRevD.106.035032},
volume = {106},
year = {2022}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Pulsar timing arrays (PTAs) are exceptionally sensitive detectors in the frequency band nHz f μHz. Ultralight dark matter (ULDM), with mass in the range 10-23 eV mφ 10-20 eV, is one class of DM models known to generate signals in this frequency window. While purely gravitational signatures of ULDM have been studied previously, in this work we consider two signals in PTAs which arise in the presence of direct couplings between ULDM and ordinary matter. These couplings induce variations in fundamental constants, i.e., particle masses and couplings. These variations can alter the moment of inertia of pulsars, inducing pulsar spin fluctuations via conservation of angular momentum, or induce apparent timing residuals due to reference clock shifts. By using mock data mimicking current PTA datasets, we show that PTA experiments outperform torsion balance and atomic clock constraints for ULDM coupled to electrons, muons, or gluons. In the case of coupling to quarks or photons, we find that PTAs and atomic clocks set similar constraints. Additionally, we discuss how future PTAs can further improve these constraints, and detail the unique properties of these signals relative to the previously studied effects of ULDM on PTAs.
AU  - Kaplan,DE
AU  - Mitridate,A
AU  - Trickle,T
DO  - 10.1103/PhysRevD.106.035032
PY  - 2022///
SN  - 2470-0010
TI  - Constraining fundamental constant variations from ultralight dark matter with pulsar timing arrays
T2  - Physical Review D
UR  - http://dx.doi.org/10.1103/PhysRevD.106.035032
VL  - 106
ER  -
Download

Note to staff:  Adding new publications to a research group

  1. Log in to Symplectic.
  2. Click on Menu > Create Links
  3. Choose what you want to create links between – in this case ‘Publications’ and ‘Organisational structures’.
  4. Choose the organisational structure (research group) into which you want to link the publications and check the box next to it.
  5. Now check the box of any publication you want to add to that group. You can use the filters to find what you want and select multiple publications if necessary. 
  6. Scroll to the bottom and click the blue ‘Create new link’ button to link them.
  7. The publications will be added to the group, and will be displayed on the group publications feed within 24 hours (it is not immediate).

Any problems, talk to Tim Evans or the Faculty Web Team.