Unequal-mass boson-star binaries: Initial data and merger dynamics

Kavli Affiliate: Ulrich Sperhake | Summary:We present a generalization of the curative initial data construction derived for equal-mass compact binaries in Helfer it et al (2019 Phys. Rev. D 99 044046; 2022 Class. Quantum Grav. 39 074001) to arbitrary mass ratios. We demonstrate how these improved initial data avoid substantial spurious artifacts in the collision […]


Continue.. Unequal-mass boson-star binaries: Initial data and merger dynamics

Direct computation of period polynomials and classification of K3-fibred Calabi–Yau threefolds

Kavli Affiliate: Taizan Watari | Summary:One can assign to four-dimensional N=2 supersymmetric Heterotic string vacua a set of classification invariants including a lattice $Λ_S$ and vector-valued modular forms. Some of the classification invariants are constrained by the condition that the Coulomb branch monodromy matrices should be integer-valued. We computed numerically the period polynomials of meromorphic […]


Continue.. Direct computation of period polynomials and classification of K3-fibred Calabi–Yau threefolds

Electronic transport mechanisms in a thin crystal of the Kitaev candidate $α$-RuCl$_3$ probed through guarded high impedance measurements

Kavli Affiliate: Alessandra Lanzara | Summary:$α$-RuCl$_3$ is considered to be the top candidate material for the experimental realization of the celebrated Kitaev model. It is however known that additional interactions beyond the Kitaev model trigger in $α$-RuCl$_3$, a long-range zigzag antiferromagnetic ground state. In this work, we investigate a nanoflake of $α$-RuCl$_3$ through guarded high […]


Continue.. Electronic transport mechanisms in a thin crystal of the Kitaev candidate $α$-RuCl$_3$ probed through guarded high impedance measurements