In the title compound, C(16)H(11)N(3)O(3), the amide group is twisted away from the quinoline ring system and nitro-benzene ring by 8.02 (1)° and 54.92 (1)°, respectively. The crystal packing is stabilized by inter-molecular C-H⋯O hydrogen bonds, and π-π inter-actions between the quinoline ring systems of inversion-related mol-ecules, with a centroid-centroid distance of 3.4802 (13) Å.

We develop the N=8 superfield description of the Bagger–Lambert–Gustavsson (BLG) model in its Nambu bracket (NB) realization. The basic ingredient is the octet of scalar d = 3 N = 8 superfields φ depending also on the coordinates of a compact three dimensional space M3. It is restricted by the superembedding-like equation, DȦφ I = 2iψBγ I BȦ , which can be treated as covariantization of the lin...

The reddish-brown title complex, [Ni(C(18)H(27)N(2)Si)(2)], was prepared via the salt-metathesis reaction of N-triisopropyl-silyl-8-amido-quinoline lithium with nickelocene (NiCp(2)). The asymmetric unit contains two symmetry-independent mol-ecules with the Ni atoms in distorted tetra-hedral environments.

The title compound, C(16)H(11)N(3)O(3), crystallizes with two independent mol-ecules which are almost identical to each other in the asymmetric unit. The dihedral angle between the quinoline ring system and the nitro-benzene ring is 51.04 (9)° in one of the mol-ecules and 48.91 (9)° in the other. The crystal packing is stabilized by C-H⋯O hydrogen bonds and π-π inter-actions, with a centroid-ce...

Following the recent construction of maximal (N = 16) gauged super-gravity in three dimensions, we derive gauged D = 3, N = 8 supergravities in three dimensions as deformations of the corresponding ungauged theories with scalar manifolds SO(8, n)/(SO(8) × SO(n)). As a special case, we recover the N = (4, 4) theories with local SO(4) = SO(3) L × SO(3) R , which reproduce the symmetries and massl...

In the title compound, C(16)H(11)N(3)O(3), the amide group is twisted away from the plane of the quinoline benzene ring by 3.93 (5)°, but is twisted away from the nitro-benzene ring by 22.68 (4)°. A weak intra-molecular C-H⋯O hydrogen bond is observed. In the crystal structure, mol-ecules are linked into a chain along the a axis by inter-molecular C-H⋯O hydrogen bonds.

We present a simple form of the on-shell gauge-invariant 1-loop effective action of N=8 supergravity which is manifestly N=8 supersymmetric at the linear level. By generalizing the dimensional arguments in superspace to non-local invariants, we show that the 1-loop effective action does not contain any contributions from bubble and triangle diagrams. The absence of bubbles implies the absence o...

Simulated tempering (ST) is an established Markov chain Monte Carlo (MCMC) method for sampling from a multimodal density π(θ). Typically, ST involves introducing an auxiliary variable k taking values in a finite subset of [0, 1] and indexing a set of tempered distributions, say π k (θ) ∝ π(θ) k. In this case, small values of k encourage better mixing, but samples from π are only obtained when t...

New gaugings of four dimensional N = 8 supergravity are constructed, including one which has a Minkowski space vacuum that preserves N = 2 supersymme-try and in which the gauge group is broken to SU(3) × U(1) 2. Previous gaugings used the form of the ungauged action which is invariant under a rigid SL(8, R) symmetry and promoted a 28-dimensional subgroup (SO(8), SO(p, 8 − p) or the non-semi-sim...