25 citations · 30 across the 4 of their papers we have counts for
4 papers
Hyperboloidal evolution for scalar scattering in Minkowski space
Ekrem S Demirboğa, Anıl Zenginoğlu
We develop a time-domain numerical framework for global scalar wave scattering in Minkowski spacetime. The main contribution is an exact conformal matching of three compactified re…
Signatures of quantum chaos in phonon-polariton billiards
Yinan Dong, Felix Liu, Ekrem Demirboga +11
We use scanning near-field optical microscopy to image hyperbolic phonon polaritons in hexagonal boron nitride (hBN) billiards with integrable and chaotic geometries. In Sinai bill…
Subtleties in constraining gravity theories with mass-radius data
Ekrem S. Demirboğa, Yakup Emre Şahin, Fethi M. Ramazanoğlu
Simultaneous measurements of neutron star masses and radii can be used to constrain deviations from general relativity (GR) as was recently demonstrated for the spontaneous scalari…
Instability of vectorized stars
Ekrem S. Demirboğa, Andrew Coates, Fethi M. Ramazanoğlu
In recent papers it has been shown that a large class of vectorization mechanisms in gravity, which involve the vector fields becoming apparently tachyonic in some regime, are actu…