Ken Van Tilburg

All Publications

• Orbital dynamics of the solar basin JOURNAL OF HIGH ENERGY PHYSICS Giovanetti, C., Lasenby, R., Van Tilburg, K. 2024

  View details for DOI 10.1007/JHEP12(2024)007

  View details for Web of Science ID 001372597100015

• New approaches to dark matter detection NATURE REVIEWS PHYSICS Hochberg, Y., Kahn, Y. E., Leane, R. K., Rajendran, S., Van Tilburg, K., Yu, T., Zurek, K. M. 2022

  View details for DOI 10.1038/s42254-022-00509-4

  View details for Web of Science ID 000854714000001

• New Constraints on Dark Photon Dark Matter with Superconducting Nanowire Detectors in an Optical Haloscope. Physical review letters Chiles, J., Charaev, I., Lasenby, R., Baryakhtar, M., Huang, J., Roshko, A., Burton, G., Colangelo, M., Van Tilburg, K., Arvanitaki, A., Nam, S. W., Berggren, K. K. 2022; 128 (23): 231802

  Abstract

  Uncovering the nature of dark matter is one of the most important goals of particle physics. Light bosonic particles, such as the dark photon, are well-motivated candidates: they are generally long-lived, weakly interacting, and naturally produced in the early universe. In this work, we report on Light A^{'} Multilayer Periodic Optical SNSPD Target, a proof-of-concept experiment searching for dark photon dark matter in the eV mass range, via coherent absorption in a multilayer dielectric haloscope. Using a superconducting nanowire single-photon detector (SNSPD), we achieve efficient photon detection with a dark count rate of 6*10^{-6}counts/s. We find no evidence for dark photon dark matter in the mass range of 0.7-0.8eV with kinetic mixing epsilon≳10^{-12}, improving existing limits in epsilon by up to a factor of 2. With future improvements to SNSPDs, our architecture could probe significant new parameter space for dark photon and axion dark matter in the meV to 10eV mass range.

  View details for DOI 10.1103/PhysRevLett.128.231802

  View details for PubMedID 35749181

• Large-misalignment mechanism for the formation of compact axion structures: Signatures from the QCD axion to fuzzy dark matter PHYSICAL REVIEW D Arvanitaki, A., Dimopoulos, S., Galanis, M., Lehner, L., Thompson, J. O., Van Tilburg, K. 2020; 101 (8)

  View details for DOI 10.1103/PhysRevD.101.083014

  View details for Web of Science ID 000524549000006

• Resonant Absorption of Bosonic Dark Matter in Molecules PHYSICAL REVIEW X Arvanitaki, A., Dimopoulos, S., Van Tilburg, K. 2018; 8 (4)

  View details for DOI 10.1103/PhysRevX.8.041001

  View details for Web of Science ID 000446299900001

• Search for light scalar dark matter with atomic gravitational wave detectors PHYSICAL REVIEW D Arvanitaki, A., Graham, P. W., Hogan, J. M., Rajendran, S., Van Tilburg, K. 2018; 97 (7)

  View details for DOI 10.1103/PhysRevD.97.075020

  View details for Web of Science ID 000430060800011

• Sound of Dark Matter: Searching for Light Scalars with Resonant-Mass Detectors. Physical review letters Arvanitaki, A., Dimopoulos, S., Van Tilburg, K. 2016; 116 (3): 031102-?

  Abstract

  The fine-structure constant and the electron mass in string theory are determined by the values of scalar fields called moduli. If the dark matter takes on the form of such a light modulus, it oscillates with a frequency equal to its mass and an amplitude determined by the local dark-matter density. This translates into an oscillation of the size of a solid that can be observed by resonant-mass antennas. Existing and planned experiments, combined with a dedicated resonant-mass detector proposed in this Letter, can probe dark-matter moduli with frequencies between 1 kHz and 1 GHz, with much better sensitivity than searches for fifth forces.

  View details for DOI 10.1103/PhysRevLett.116.031102

  View details for PubMedID 26849581

• Search for Ultralight Scalar Dark Matter with Atomic Spectroscopy PHYSICAL REVIEW LETTERS Van Tilburg, K., Leefer, N., Bougas, L., Budker, D. 2015; 115 (1)

  Abstract

  We report new limits on ultralight scalar dark matter (DM) with dilatonlike couplings to photons that can induce oscillations in the fine-structure constant α. Atomic dysprosium exhibits an electronic structure with two nearly degenerate levels whose energy splitting is sensitive to changes in α. Spectroscopy data for two isotopes of dysprosium over a two-year span are analyzed for coherent oscillations with angular frequencies below 1  rad s^{-1}. No signal consistent with a DM coupling is identified, leading to new constraints on dilatonlike photon couplings over a wide mass range. Under the assumption that the scalar field comprises all of the DM, our limits on the coupling exceed those from equivalence-principle tests by up to 4 orders of magnitude for masses below 3×10^{-18}  eV. Excess oscillatory power, inconsistent with fine-structure variation, is detected in a control channel, and is likely due to a systematic effect. Our atomic spectroscopy limits on DM are the first of their kind, and leave substantial room for improvement with state-of-the-art atomic clocks.

  View details for DOI 10.1103/PhysRevLett.115.011802

  View details for Web of Science ID 000357095400002

  View details for PubMedID 26182090

• Towards a Bullet-proof test for indirect signals of dark matter PHYSICAL REVIEW D Graham, P. W., Rajendran, S., Van Tilburg, K., Wiser, T. D. 2015; 91 (10)

  View details for DOI 10.1103/PhysRevD.91.103524

  View details for Web of Science ID 000354983300006

• Searching for dilaton dark matter with atomic clocks PHYSICAL REVIEW D Arvanitaki, A., Huang, J., Van Tilburg, K. 2015; 91 (1)

  View details for DOI 10.1103/PhysRevD.91.015015

  View details for Web of Science ID 000348732500005

• The last vestiges of naturalness JOURNAL OF HIGH ENERGY PHYSICS Arvanitaki, A., Baryakhtar, M., Huang, X., Van Tilburg, K., Violladoro, G. 2014

  View details for DOI 10.1007/JHEP03(2014)022

  View details for Web of Science ID 000332691600003

• Supersymmetry in the shadow of photini JOURNAL OF HIGH ENERGY PHYSICS Baryakhtar, M., Craig, N., Van Tilburg, K. 2012

  View details for DOI 10.1007/JHEP07(2012)164

  View details for Web of Science ID 000307299800042