532 citations · 5.4k across the 156 of their papers we have counts for
161 papers
Perturbative QCD correction to the nonleptonic weak rate in dense quark matter
Matti Heikinheimo, Hanna Lempiäinen, Risto Paatelainen +2
We present the first calculation of the leading perturbative quantum chromodynamics (QCD) correction to the nonleptonic weak flavor-equilibration rate in dense quark matter. The co…
Anisotropic electron scattering and Migdal effect in semiconductor detectors
Aula Al-Adulrazzaq, Paolo Settembri, Sebastian Sassi +4
Cryogenic semiconductor detectors are widely used in dark matter direct detection. Electronic excitations in these materials can be caused either by direct dark matter electron sca…
Landau-Zener formula and resonant axion conversion in neutron star magnetospheres
Matti Heikinheimo, Topi Sirkiä, Kimmo Tuominen
We investigate the Landau-Zener description of resonant axion-photon conversion in neutron star magnetospheres. We find that this picture often fails for axion conversions to milli…
Stochastic Gravitational Waves from Modulated Reheating
Michele Benaco, Dimitrios Karamitros, Sami Nurmi +1
We investigate scalar-induced stochastic gravitational waves from adiabatic curvature perturbations sourced by a spectator field via the modulated reheating mechanism. We consider…
Fast numerical evaluation of dark matter direct detection event rates
Sebastian Sassi, Aula Al-Adulrazzaq, Matti Heikinheimo +1
The mathematical expression for the dark matter nuclear recoil event rate in a detector consists of a six dimensional integral over the velocity distribution of dark matter in the…
Axion Superradiance in Dipole Magnetic Fields of Pulsars
Topi Sirkiä, Matti Heikinheimo, Kimmo Tuominen
We consider constraints on the axion-photon coupling by superradiance due to a plasma instability in the magnetospheres of millisecond pulsars. We compute the growth rate of a supe…