On consistent truncations in N=2∗{\cal N}=2^* holography

Although Pilch-Warner (PW) gravitational renormalization group flow [arXiv:hep-th/0004063] passes a number of important consistency checks to be identified as a holographic dual to a large-$N$ $SU(N)$ ${\cal N}=2^*$ supersymmetric gauge theory, it fails to reproduce the free energy of the theory on $S^4$, computed with the localization techniques. This disagreement points to the existence of a larger dual gravitational consistent truncation, which in the gauge theory flat-space limit reduces to a PW flow. Such truncation was recently identified by Bobev-Elvang-Freedman-Pufu (BEFP) [arXiv:1311.1508]. Additional bulk scalars of the BEFP gravitation truncation might lead to destabilization of the finite-temperature deformed PW flows, and thus modify the low-temperature thermodynamics and hydrodynamics of ${\cal N} =2^*$ plasma. We compute the quasinormal spectrum of these bulk scalar fields in the thermal PW flows and demonstrate that these modes do not condense, as long as the masses of the ${\cal N}=2^*$ hypermultiplet components are real.Comment: 13 pages, 2 figures; supplemental files attache

Generalized Uncertainty Principle and Self-Adjoint Operators

In this work we explore the self-adjointness of the GUP-modified momentum and Hamiltonian operators over different domains. In particular, we utilize the theorem by von-Newmann for symmetric operators in order to determine whether the momentum and Hamiltonian operators are self-adjoint or not, or they have self-adjoint extensions over the given domain. In addition, a simple example of the Hamiltonian operator describing a particle in a box is given. The solutions of the boundary conditions that describe the self-adjoint extensions of the specific Hamiltonian operator are obtained.Comment: v1: 22 pages, LaTeX, revtex4; v2: 19 pages, minor corrections, to appear in Annals of Physic

The impact of immediate breast reconstruction on the time to delivery of adjuvant therapy: the iBRA-2 study

Background: Immediate breast reconstruction (IBR) is routinely offered to improve quality-of-life for women requiring mastectomy, but there are concerns that more complex surgery may delay adjuvant oncological treatments and compromise long-term outcomes. High-quality evidence is lacking. The iBRA-2 study aimed to investigate the impact of IBR on time to adjuvant therapy. Methods: Consecutive women undergoing mastectomy ± IBR for breast cancer July–December, 2016 were included. Patient demographics, operative, oncological and complication data were collected. Time from last definitive cancer surgery to first adjuvant treatment for patients undergoing mastectomy ± IBR were compared and risk factors associated with delays explored. Results: A total of 2540 patients were recruited from 76 centres; 1008 (39.7%) underwent IBR (implant-only [n = 675, 26.6%]; pedicled flaps [n = 105,4.1%] and free-flaps [n = 228, 8.9%]). Complications requiring re-admission or re-operation were significantly more common in patients undergoing IBR than those receiving mastectomy. Adjuvant chemotherapy or radiotherapy was required by 1235 (48.6%) patients. No clinically significant differences were seen in time to adjuvant therapy between patient groups but major complications irrespective of surgery received were significantly associated with treatment delays. Conclusions: IBR does not result in clinically significant delays to adjuvant therapy, but post-operative complications are associated with treatment delays. Strategies to minimise complications, including careful patient selection, are required to improve outcomes for patients

An Electrostatic Analysis of Subthreshold Behavior in a FINFET

This paper investigates the subthreshold behavior of Fin Field Effect Transistor (FinFET) by solving 3D Laplace, and Poisson equations. Based on the potential distribution inside the fin, the appropriate band bending and the change in the band bending (∂ψS) were calculated. Three-dimensional analysis of ∂ψSindicates that ∂ψS is less (by ∼ 20% for a channel width (Tfin) of 20 nm) in the middle of the channel compared to that at the Si-SiO2 interface. The decrease in ∂ψS towards the middle of the channel indicates that the control of the gate decreases towards the middle of the channel. Simulation results show that the S-factor of the device increases as Tfin increases. It is observed that the S-factors calculated from the Laplace and the Poisson equations differ by ∼7% for a device with a Tfin = 50 nm. However this difference in S-factor gradually decreases and for smaller channel width devices, the S-factors calculated using Laplace and Poisson equations are the same. A comparison of S-factors obtained from Laplace and Poisson equation shows that the S-factor obtained from Poisson equation agrees very well with the reported experimental results. Thus, the systemic study of subthreshold behavior of FinFET shows that it is most appropriate to determine the S-factor of wider channel devices by solving 3D Poisson equation with appropriate doping concentration

Analysis of Subthreshold Behavior of FinFET Using Taurus

This paper investigates the subthreshold behavior of Fin Field Effect Transistor (FinFET). The FinFET is considered to be an alternate MOSFET structure for the deep sub-micron regime, having excellent device characteristics. As the channel length decreases, the study of subthreshold behavior of the device becomes critically important for successful design and implementation of digital circuits. An accurate analysis of subthreshold behavior of FinFET was done by simulating the device in a 3D process and device simulator, Taurus. The subthreshold behavior of FinFET, was measured using a parameter called S-factor which was obtained from the ln(IDS) - VGS characteristics. The value of Sfactor of devices of various fin dimensions with channel length Lg in the range of 20 nm - 50 nm and with the fin width Tfin in the range of 10 nm - 40 nm was calculated. It was observed that for devices with longer channel lengths, the value of S-factor was close to the ideal value of 60 mV/dec. The S-factor increases exponentially for channel lengths, Lg \u3c 1.5 Tfin. Further, for a constant Lg, the S factor was observed to increase with Tfin. An empirical relationship between S, Lg and Tfin was developed based on the simulation results, which could be used as a rule of thumb for determining the S-factor of devices

Laser indicated occlusal plane device: A novel technique for occlusal plane orientation

Parallelism to the ala-tragus line is commonly used as a guide for the orientation of the occlusal plane with the help of a fox plane. The accuracy of parallelism is affected by improper judgment or patient movement. This report describes a method with a modified fox plane that aids in occlusal plane determination. The device is placed in the patient's mouth with the maxillary occlusal rim to determine parallelism to the ala-tragus line and interpupillary line. The adjustments are made until the laser light on the device runs parallel to the ala-tragus line, and the spirit bubble is centered between the lines of the tube. This technique facilitates direct visualization of parallelism, thereby avoiding parallax errors