122 citations · 438 across the 15 of their papers we have counts for
16 papers
Determination of acoustic phonon anharmonicities via second-order Raman scattering in CuI
Ron Hildebrandt, Michael Seifert, Janine George +5
We demonstrate the determination of anharmonic acoustic phonon properties via second-order Raman scattering exemplarily on copper iodide single crystals. The origin of multi-phonon…
Lorentz-violating gravity and the bootstrap procedure
Michael D Seifert
In conventional gravitational physics, the so-called "bootstrap procedure" can be used to extrapolate from a linear model of a rank-2 tensor to a full non-linear theory of gravity…
Singular Hamiltonians in models with spontaneous Lorentz symmetry breaking
Michael D. Seifert
Many current models which "violate Lorentz symmetry" do so via a vector or tensor field which takes on a vacuum expectation value, thereby spontaneously breaking the underlying Lor…
Constraints and degrees of freedom in Lorentz-violating field theories
Michael D. Seifert
Many current models which "violate Lorentz symmetry" do so via a vector or tensor field which takes on a vacuum expectation value, thereby spontaneously breaking the underlying Lor…
Extending the graviton propagator with a Lorentz-violating vector field
Michael D. Seifert
I discuss progress towards "bootstrapping" a Lorentz-violating gravity theory: namely, extending a linear Lorentz-violating theory of a rank-2 tensor to a non-linear theory by coup…
Lorentz violation and topological defects
Michael D. Seifert
If Lorentz symmetry is broken, it must have occurred dynamically, via a vector or tensor field whose potential energy forces it to take on a non-zero background expectation value "…