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Superradiant Interactions for Relic Detection with Entangled Nuclear Spins
Marios Galanis, Onur Hosten, Asimina Arvanitaki +1
We recently showed that macroscopic nuclear spin ensembles prepared in coherent spin states can dramatically enhance the interaction rates of weakly interacting cosmic relics-such…
Detecting the QCD axion via the ferroaxionic force with piezoelectric materials
Asimina Arvanitaki, Jonathan Engel, Andrew A. Geraci +3
We show that piezoelectric materials can be used to source virtual QCD axions, generating a new axion-mediated force. Spontaneous parity violation within the piezoelectric crystal…
Superradiant Interactions of the Cosmic Neutrino Background, Axions, Dark Matter, and Reactor Neutrinos
Asimina Arvanitaki, Savas Dimopoulos, Marios Galanis
In this paper we do three things. First, we outline the conditions under which the interaction rate of inelastic processes that change the internal state of a system of targets…
A Diffraction Grating for the Cosmic Neutrino Background and Dark Matter
Asimina Arvanitaki, Savas Dimopoulos
We propose structures of size between meter to 100 meters that drastically alter the local distribution of the Cosmic Neutrino Background (). These structures have a…
The Cosmic Neutrino Background on the Surface of the Earth
Asimina Arvanitaki, Savas Dimopoulos
We argue that the reflection of relic neutrinos from the surface of the Earth results in a significant local asymmetry, far exceeding the expected primordial lepton asymm…
The Piezoaxionic Effect
Asimina Arvanitaki, Amalia Madden, Ken Van Tilburg
Axion dark matter (DM) constitutes an oscillating background that violates parity and time-reversal symmtries. Inside piezoelectric crystals, where parity is broken spontaneously,…
Dark QED from Inflation
Asimina Arvanitaki, Savas Dimopoulos, Marios Galanis +3
One contribution to any dark sector's abundance comes from its gravitational production during inflation. If the dark sector is weakly coupled to the inflaton and the Standard Mode…
Resonant absorption of bosonic dark matter in molecules
Asimina Arvanitaki, Savas Dimopoulos, Ken Van Tilburg
We propose a new class of bosonic dark matter (DM) detectors based on resonant absorption onto a gas of small polyatomic molecules. Bosonic DM acts on the molecules as a narrow-ban…
A small weak scale from a small cosmological constant
Asimina Arvanitaki, Savas Dimopoulos, Victor Gorbenko +2
We propose a framework in which Weinberg's anthropic explanation of the cosmological constant problem also solves the hierarchy problem. The weak scale is selected by chiral dynami…
Search for light scalar dark matter with atomic gravitational wave detectors
Asimina Arvanitaki, Peter W. Graham, Jason M. Hogan +2
We show that gravitational wave detectors based on a type of atom interferometry are sensitive to ultralight scalar dark matter. Such dark matter can cause temporal oscillations in…
Black Hole Mergers and the QCD Axion at Advanced LIGO
Asimina Arvanitaki, Masha Baryakhtar, Savas Dimopoulos +2
In the next few years Advanced LIGO (aLIGO) may see gravitational waves (GWs) from thousands of black hole (BH) mergers. This marks the beginning of a new precision tool for physic…
Sound of Dark Matter: Searching for Light Scalars with Resonant-Mass Detectors
Asimina Arvanitaki, Savas Dimopoulos, Ken Van Tilburg
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…
Discovering the QCD Axion with Black Holes and Gravitational Waves
Asimina Arvanitaki, Masha Baryakhtar, Xinlu Huang
Advanced LIGO may be the first experiment to detect gravitational waves. Through superradiance of stellar black holes, it may also be the first experiment to discover the QCD axion…
Searching for dilaton dark matter with atomic clocks
Asimina Arvanitaki, Junwu Huang, Ken Van Tilburg
We propose an experiment to search for ultralight scalar dark matter (DM) with dilatonic interactions. Such couplings can arise for the dilaton as well as for moduli and axion-like…
Resonant detection of axion mediated forces with Nuclear Magnetic Resonance
Asimina Arvanitaki, Andrew A. Geraci
We describe a method based on precision magnetometry that can extend the search for axion-mediated spin-dependent forces by several orders of magnitude. By combining techniques use…
The Last Vestiges of Naturalness
Asimina Arvanitaki, Masha Baryakhtar, Xinlu Huang +2
Direct LHC bounds on colored SUSY particles now corner naturalness more than the measured value of the Higgs mass does. Bounds on the gluino are of particular importance, since it…
Mini-Split
Asimina Arvanitaki, Nathaniel Craig, Savas Dimopoulos +1
The lack of evidence for new physics beyond the standard model at the LHC points to a paucity of new particles near the weak scale. This suggests that the weak scale is tuned and t…
A Non Standard Model Higgs at the LHC as a Sign of Naturalness
Asimina Arvanitaki, Giovanni Villadoro
Light states associated with the hierarchy problem affect the Higgs LHC production and decays. We illustrate this within the MSSM and two simple extensions applying the latest boun…
Phenomenology of TeV Little String Theory from Holography
Ignatios Antoniadis, Asimina Arvanitaki, Savas Dimopoulos +1
We study the graviton phenomenology of TeV Little String Theory by exploiting its holographic gravity dual five-dimensional theory. This dual corresponds to a linear dilaton backgr…
String Photini at the LHC
Asimina Arvanitaki, Nathaniel Craig, Savas Dimopoulos +2
String theories with topologically complex compactification manifolds suggest the simultaneous presence of many unbroken U(1)'s without any light matter charged under them. The gau…
Decaying Dark Matter as a Probe of Unification and TeV Spectroscopy
Asimina Arvanitaki, Savas Dimopoulos, Sergei Dubovsky +3
In supersymmetric unified theories the dark matter particle can decay, just like the proton, through grand unified interactions with a lifetime of order of 10^{26} sec. Its decay p…
Astrophysical Probes of Unification
Asimina Arvanitaki, Savas Dimopoulos, Sergei Dubovsky +3
Traditional ideas for testing unification involve searching for the decay of the proton and its branching modes. We point out that several astrophysical experiments are now reachin…
Testing Atom and Neutron Neutrality with Atom Interferometry
Asimina Arvanitaki, Savas Dimopoulos, Andrew A. Geraci +2
We propose an atom-interferometry experiment based on the scalar Aharonov-Bohm effect which detects an atom charge at the 10^{-28}e level, and improves the current laboratory limit…
Stopping Gluinos
A. Arvanitaki, S. Dimopoulos, A. Pierce +2
Long lived gluinos are the trademark of split supersymmetry. They form R-hadrons that, when charged, efficiently lose energy in matter via ionisation. Independent of R-spectroscopy…