81 citations · 254 across the 13 of their papers we have counts for
13 papers
Nonlinear Magnon Magnetic Moment Transport in Triangular-Lattice f-Wave Antialtermagnets
Volodymyr P. Kravchuk, Kostiantyn V. Yershov, Bastián Pradenas +6
We study the spin excitations in the frustrated coplanar 120-degree ground state of the triangular-lattice Heisenberg antiferromagnet and demonstrate that they carry a magnetic mom…
Geometric Spin Rotation in Triangular Antiferromagnets
Grigor Adamyan, Bastian Pradenas, Boris Ivanov +1
We describe a geometric phenomenon in which a traveling wave made of degenerate Goldstone modes leaves behind a transformed ground state. In a triangular Heisenberg antiferromagnet…
Spontaneous symmetry breaking in the Heisenberg antiferromagnet on a triangular lattice
Bastián Pradenas, Grigor Adamyan, Oleg Tchernyshyov
We present a detailed investigation of an overlooked symmetry structure in non-collinear antiferromagnets that gives rise to an emergent quantum number for magnons. Focusing on the…
Helical edge modes in a triangular Heisenberg antiferromagnet
Bastian Pradenas, Grigor Adamyan, Oleg Tchernyshyov
We investigate the emergence of helical edge modes in a Heisenberg antiferromagnet on a triangular lattice, driven by a topological mechanism similar to that proposed by Dong et al…
Hall mass and transverse Noether spin currents in noncollinear antiferromagnets
Luke Wernert, Bastián Pradenas, Oleg Tchernyshyov +1
Noncollinear antiferromagnets (AFMs) have recently attracted attention in the emerging field of antiferromagnetic spintronics because of their various interesting properties. Due t…
Spin-frame field theory of a three-sublattice antiferromagnet
Bastian Pradenas, Oleg Tchernyshyov
We present a nonlinear field theory of a three-sublattice hexagonal antiferromagnet. The order parameter is the spin frame, an orthogonal triplet of vectors related to sublattice m…
Two-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: 40 GHz Telescope Pointing, Beam Profile, Window Function, and Polarization Performance
Zhilei Xu, Michael K. Brewer, Pedro Fluxá Rojas +33
The Cosmology Large Angular Scale Surveyor (CLASS) is a telescope array that observes the cosmic microwave background (CMB) over 75% of the sky from the Atacama Desert, Chile, at f…
Design and characterization of the Cosmology Large Angular Scale Surveyor (CLASS) 93 GHz focal plane
Sumit Dahal, Aamir Ali, John W. Appel +44
The Cosmology Large Angular Scale Surveyor (CLASS) aims to detect and characterize the primordial B-mode signal and make a sample-variance-limited measurement of the optical depth…
Vanishing of local non-Gaussianity in canonical single field inflation
Rafael Bravo, Sander Mooij, Gonzalo A. Palma +1
We study the production of observable primordial local non-Gaussianity in two opposite regimes of canonical single field inflation: attractor (standard single field slow-roll infla…
A generalized non-Gaussian consistency relation for single field inflation
Rafael Bravo, Sander Mooij, Gonzalo A. Palma +1
We show that a perturbed inflationary spacetime, driven by a canonical single scalar field, is invariant under a special class of coordinate transformations together with a field r…
Scale invariance of the primordial tensor power spectrum
Gonzalo A. Palma, Bastian Pradenas, Walter Riquelme +1
Future cosmic microwave background polarization experiments will search for evidence of primordial tensor modes at large angular scales, in the multipole range $4 \leq \ell \leq 50…
Slanted snaking of localized Faraday waves
Bastián Pradenas, Isidora Araya, Marcel G. Clerc +3
We report on an experimental, theoretical and numerical study of slanted snaking of spatially localized parametrically excited waves on the surface of a water-surfactant mixture in…
The Cosmology Large Angular Scale Surveyor
Kathleen Harrington, Tobias Marriage, Aamir Ali +33
The Cosmology Large Angular Scale Surveyor (CLASS) is a four telescope array designed to characterize relic primordial gravitational waves from inflation and the optical depth to r…