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Jul 19, 2016

In this work, we have presented new relations to reduce EYM amplitudes involving up to three gravitons and up to two color traces to partial amplitudes of pure YM theories. From their derivation in the dimension-agnostic CHY formalism, the results a…

Einstein-Yang-Mills from pure Yang-Mills amplitudes

We present new relations for scattering amplitudes of color ordered gluons and gravitons in Einstein-Yang-Mills theory. Tree-level amplitudes of arbi…
Mar 17, 2015
Differential Geometry

We consider the continuously differentiable map that takes a (small) function u∈C2,α(L) to the mean curvature

Isoperimetric structure of asymptotically conical manifolds

We study the isoperimetric structure of Riemannian manifolds that are asymptotic to cones with non-negative Ricci curvature. Specifically, we general…
Sep 28, 2007

We obtained the action of the D=11 supermembrane compactified on T6×S1 with nontrivial central charge induced by a topological condition invariant under supersymmetric and kappa symmetry transformations. The hamiltonian in the LCG is invariant under…

N=1 4D Supermembrane from 11D

The action of the 11D supermembrane with nontrivial central charges compactified on a 7D toroidal manifold is obtained. It describes a supermembrane …
Mar 08, 2013
Optics

High-bandwidth squeezed light at 1550 nm from a compact monolithic PP…

We report the generation of squeezed vacuum states of light at 1550 nm with a broadband quantum noise reduction of up to 4.8 dB ranging from 5 MHz to…
Jan 29, 2010

The search for spinning black hole binaries in mock LISA data using a…

Coalescing massive Black Hole binaries are the strongest and probably the most important gravitational wave sources in the LISA band. The spin and or…
Jul 10, 2017
General Topology

Adaptive clustering procedure for continuous gravitational wave searc…

In hierarchical searches for continuous gravitational waves, clustering of candidates is an important postprocessing step because it reduces the numb…
Dec 15, 2014

Numerical Brill-Lindquist initial data with a Schwarzschildean end at…

We construct numerically time-symmetric initial data that are Schwarzschildean at spatial infinity and Brill-Lindquist in the interior. The transitio…
Apr 28, 2010

The GEO600 squeezed light source

The next upgrade of the GEO600 gravitational wave detector is scheduled for 2010 and will, in particular, involve the implementation of squeezed ligh…
Oct 17, 2011

Squeezed light at 1550 nm with a quantum noise reduction of 12.3 dB

Continuous-wave squeezed states of light at the wavelength of 1550 nm have recently been demonstrated, but so far the obtained factors of noise suppr…
Nov 02, 2011

Discovery of Nine Gamma-Ray Pulsars in Fermi-LAT Data Using a New Bli…

We report the discovery of nine previously unknown gamma-ray pulsars in a blind search of data from the Fermi Large Area Telescope (LAT). The pulsars…
Nov 26, 2013

Einstein@Home discovery of four young gamma-ray pulsars in Fermi LAT …

We report the discovery of four gamma-ray pulsars, detected in computing-intensive blind searches of data from the Fermi Large Area Telescope (LAT). …
Jun 12, 2015

Maximising the detection probability of kilonovae associated with g…

Estimates of the source sky location for gravitational wave signals are likely span areas ranging up to hundreds of square degrees or more, making it…
Oct 17, 2018

Gravitational waves from three-dimensional core-collapse supernova …

We present predictions for the gravitational-wave (GW) emission of three-dimensional supernova (SN) simulations performed for a 15 solar-mass progeni…
Sep 18, 2008

Matters of Gravity, The Newsletter of the Topical Group in Gravitatio…

GGR News: - Remembering Wheeler, by Jim Isenberg; Research Briefs: - A Brief Summary of the WMAP5 Results, by Lyman Page; - Science with LIGO…
Jul 04, 2010

Quantum Enhancement of the Zero-Area Sagnac Interferometer Topology f…

Only a few years ago, it was realized that the zero-area Sagnac interferometer topology is able to perform quantum nondemolition measurements of posi…
Oct 28, 2010

The impact of realistic models of mass segregation on the event rate …

One of the most interesting sources of gravitational waves (GWs) for LISA is the inspiral of compact objects on to a massive black hole (MBH), common…
Mar 31, 2009
Mathematical Physics

Inner Cauchy horizon of axisymmetric and stationary black holes with …

We study the interior electrovacuum region of axisymmetric and stationary black holes with surrounding matter and find that there exists always a reg…
Jul 07, 2018

Time-Delay Interferometry and Clock-Noise Calibration

The Laser Interferometer Space Antenna is a joint ESA-NASA space-mission to detect and study mHz cosmic gravitational waves. The trajectories followe…
May 17, 2012

On renormalization group flows and the a-theorem in 6d

We study the extension of the approach to the a-theorem of Komargodski and Schwimmer to quantum field theories in d=6 spacetime dimensions. The dilat…
Oct 04, 2016

Bouncing cosmologies with dark matter and dark energy

We review matter bounce scenarios where the matter content is dark matter and dark energy. These cosmologies predict a nearly scale-invariant power s…
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