484 research outputs found
Current and Near-Term AI as a Potential Existential Risk Factor
There is a substantial and ever-growing corpus of evidence and literature
exploring the impacts of Artificial intelligence (AI) technologies on society,
politics, and humanity as a whole. A separate, parallel body of work has
explored existential risks to humanity, including but not limited to that
stemming from unaligned Artificial General Intelligence (AGI). In this paper,
we problematise the notion that current and near-term artificial intelligence
technologies have the potential to contribute to existential risk by acting as
intermediate risk factors, and that this potential is not limited to the
unaligned AGI scenario. We propose the hypothesis that certain
already-documented effects of AI can act as existential risk factors,
magnifying the likelihood of previously identified sources of existential risk.
Moreover, future developments in the coming decade hold the potential to
significantly exacerbate these risk factors, even in the absence of artificial
general intelligence. Our main contribution is a (non-exhaustive) exposition of
potential AI risk factors and the causal relationships between them, focusing
on how AI can affect power dynamics and information security. This exposition
demonstrates that there exist causal pathways from AI systems to existential
risks that do not presuppose hypothetical future AI capabilities
Coexistence of a triplet nodal order-parameter and a singlet order-parameter at the interfaces of ferromagnet-superconductor Co/CoO/In junctions
We present differential conductance measurements of Cobalt / Cobalt-Oxide /
Indium planar junctions, 500nm x 500nm in size. The junctions span a wide range
of barriers, from very low to a tunnel barrier. The characteristic conductance
of all the junctions show a V-shape structure at low bias instead of the
U-shape characteristic of a s-wave order parameter. The bias of the conductance
peaks is, for all junctions, larger than the gap of indium. Both properties
exclude pure s-wave pairing. The data is well fitted by a model that assumes
the coexistence of s-wave singlet and equal spin p-wave triplet fluids. We find
that the values of the s-wave and p-wave gaps follow the BCS temperature
dependance and that the amplitude of the s-wave fluid increases with the
barrier strength.Comment: 5 pages, Accepted to Phys. Rev.
Evolution of a bosonic mode across the superconducting dome in the high-Tc cuprate Pr(2-x)Ce(x)CuO(4-{\delta})
We report a detailed spectroscopic study of the electron doped cuprate
superconductor Pr(2-x)Ce(x)CuO(4-{\delta}) using point contact junctions for
x=0.125(underdoped), x=0.15(optimally doped) and x=0.17(overdoped). From our
conductance measurements we are able to identify bosonic resonances for each
doping. These excitations disappear above the critical temperature, and above
the critical magnetic field. We find that the energy of the bosonic excitations
decreases with doping, which excludes lattice vibrations as the paring glue. We
conclude that the bosonic mediator for these cuprates is more likely to be spin
excitations.Comment: 4 page
Conspiracy, Religion, and the Public Sphere:The Discourses of Far-Right Counterpublics in the U.S. and South Korea
Conspiracy, Religion, and the Public Sphere:The Discourses of Far-Right Counterpublics in the U.S. and South Korea
Field Induced Nodal Order Parameter in the Tunneling Spectrum of YBaCuO Superconductor
We report planar tunneling measurements on thin films of
YBaCuO at various doping levels under magnetic fields. By
choosing a special setup configuration, we have probed a field induced energy
scale that dominates in the vicinity of a node of the d-wave superconducting
order parameter. We found a high doping sensitivity for this energy scale. At
Optimum doping this energy scale is in agreement with an induced
order parameter. We found that it can be followed down to low fields at optimum
doping, but not away from it.Comment: 9 pages, 8 figures, accepted for publication in Phys. Rev.
- …