Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Keselman, Anna"'
We present the theory of the longitudinal spin Seebeck effect between a Heisenberg spin-1/2 chain and a conductor. The effect consists of the generation of a spin current across the spin chain-conductor interface in response to the temperature differ
Externí odkaz:
http://arxiv.org/abs/2409.08327
Although quantum simulation can give insight into elusive or intractable physical phenomena, many quantum simulators are unavoidably limited in the models they mimic. Such is also the case for atom arrays interacting via Rydberg states - a platform p
Externí odkaz:
http://arxiv.org/abs/2306.07041
Publikováno v:
Phys. Rev. B 105, 184429 (2022)
We use a hydrodynamic approach to investigate dynamic spin susceptibility of the antiferromagnetic spin-$1/2$ Heisenberg chain with a uniform Dzyaloshinskii-Moriya (DM) interaction in the presence of an external magnetic field. We find that transvers
Externí odkaz:
http://arxiv.org/abs/2201.10570
Models for non-unitary quantum dynamics, such as quantum circuits that include projective measurements, have been shown to exhibit rich quantum critical behavior. There are many complementary perspectives on this behavior. For example, there is a kno
Externí odkaz:
http://arxiv.org/abs/2012.04666
Publikováno v:
Phys. Rev. B 103, 121111 (2021)
Scrambling of information in a quantum many-body system, quantified by the out-of-time-ordered correlator (OTOC), is a key manifestation of quantum chaos. A regime of exponential growth in the OTOC, characterized by a Lyapunov exponent, has so far mo
Externí odkaz:
http://arxiv.org/abs/2009.10104
Publikováno v:
Phys. Rev. Lett. 125, 187201 (2020)
We study the transverse dynamical susceptibility of an antiferromagnetic spin$-1/2$ chain in presence of a longitudinal Zeeman field. In the low magnetization regime in the gapless phase, we show that the marginally irrelevant backscattering interact
Externí odkaz:
http://arxiv.org/abs/2005.12399
Autor:
Dally, Rebecca L., Heng, Alvin J. R., Keselman, Anna, Bordelon, Mitchell M., Stone, Matthew B., Balents, Leon, Wilson, Stephen D.
Publikováno v:
Phys. Rev. Lett. 124, 197203 (2020)
Here we report on the formation of two and three magnon bound states in the quasi-one-dimensional antiferromagnet $\alpha$-NaMnO$_2$, where the single-ion, uniaxial anisotropy inherent to the Mn$^{3+}$ ions in this material provides a binding mechani
Externí odkaz:
http://arxiv.org/abs/2001.07300
Publikováno v:
Phys. Rev. Lett. 125, 117202 (2020)
Motivated by multiple possible physical realizations, we study the SU(4) quantum antiferromagnet with a fundamental representation on each site of the triangular lattice. We provide evidence for a gapless liquid ground state of this system with an em
Externí odkaz:
http://arxiv.org/abs/1912.01025
Publikováno v:
SciPost Phys. 8, 076 (2020)
In systems with many local degrees of freedom, high-symmetry points in the phase diagram can provide an important starting point for the investigation of their properties throughout the phase diagram. In systems with both spin and orbital (or valley)
Externí odkaz:
http://arxiv.org/abs/1911.03492
Publikováno v:
SciPost Phys. 7, 050 (2019)
We study nanowire-based Josephson junctions shunted by a capacitor and take into account the presence of low-energy quasiparticle excitations. These are treated by extending conventional models used to describe superconducting qubits to include the c
Externí odkaz:
http://arxiv.org/abs/1905.03275