Highlights from the Asia Pacific Region

2012 ◽  
Vol 01 (02) ◽  
pp. 14-31
Author(s):  
APPN Editorial Office
Keyword(s):  
Standard Model ◽  
Quantum Computer ◽  
Cluster State ◽  
Logic Gates ◽  
Asia Pacific ◽  
Asia Pacific Region ◽  
Quantum Logic Gates ◽  
The Standard Model ◽  
The One ◽  
Flow Of Information

Quantum computing promises to deliver unprecedented effciency by exploiting the laws of quantum mechanics in order to process information in ways fundamentally different from today's classical computers. As recently as a decade ago Raussendorf and Briegel proposed the one-way quantum computer which differs dramatically from the standard model of quantum computation [1]. Whereas the standard model relies on sequences of quantum logic gates that process qubits, the one-way model implements computations as a sequence of measurements on an array of highly entangled states; the so-called cluster state. A cluster state is first created as a generic resource, and the algorithms to be computed are determined by the choice and sequence of measurements, allowing us to imprint a circuit in real time as the flow of information is directed through the cluster.

Highlights from the Asia Pacific Region

2014 ◽  
Vol 03 (01) ◽  
pp. 28-38
Author(s):  
APPN Editorial Team
Keyword(s):  
Quantum Information ◽  
Quantum Teleportation ◽  
Quantum Communication ◽  
Quantum Information Processing ◽  
Logic Gates ◽  
Building Blocks ◽  
Asia Pacific ◽  
Quantum Computers ◽  
Asia Pacific Region ◽  
Quantum Logic Gates

The laws of quantum mechanics enable optical communications with the ultimate capacity and quantum computers to solve certain problems with unprecedented speed. A key ingredient in such quantum information processing is quantum teleportation: the act of transferring quantum information from a sender to a spatially distant receiver by utilizing shared entanglement and classical communications. For example, optical quantum teleportation is essential for various quantum communication protocols. Quantum logic gates based on optical quantum teleportation are one of the building blocks of optical quantum computers.

Ring-diagram summations in the finite-temperature effective potential

1993 ◽  
Vol 71 (5-6) ◽  
pp. 227-236 ◽  
Author(s):  
M. E. Carrington
Keyword(s):  
Phase Transition ◽  
Standard Model ◽  
Effective Potential ◽  
Finite Temperature ◽  
Electroweak Phase Transition ◽  
First Order ◽  
Ring Diagram ◽  
First Order Phase Transition ◽  
The Standard Model ◽  
The One

There has been much recent interest in the finite-temperature effective potential of the standard model in the context of the electroweak phase transition. We review the calculation of the effective potential with particular emphasis on the validity of the expansions that are used. The presence of a term that is cubic in the Higgs condensate in the one-loop effective potential appears to indicate a first-order electroweak phase transition. However, in the high-temperature regime, the infrared singularities inherent in massless models produce cubic terms that are of the same order in the coupling. In this paper, we discuss the inclusion of an infinite set of these terms via the ring-diagram summation, and show that the standard model has a first-order phase transition in the weak coupling expansion.

scholarly journals Weak scale from Planck scale: Mass scale generation in a classically conformal two-scalar system

2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
Junichi Haruna ◽  
Hikaru Kawai
Keyword(s):  
Scalar Field ◽  
Standard Model ◽  
Planck Scale ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
The Other ◽  
Expectation Value ◽  
Weak Scale ◽  
The Standard Model ◽  
The One

Abstract In the standard model, the weak scale is the only parameter with mass dimensions. This means that the standard model itself cannot explain the origin of the weak scale. On the other hand, from the results of recent accelerator experiments, except for some small corrections, the standard model has increased the possibility of being an effective theory up to the Planck scale. From these facts, it is naturally inferred that the weak scale is determined by some dynamics from the Planck scale. In order to answer this question, we rely on the multiple point criticality principle as a clue and consider the classically conformal $\mathbb{Z}_2\times \mathbb{Z}_2$ invariant two-scalar model as a minimal model in which the weak scale is generated dynamically from the Planck scale. This model contains only two real scalar fields and does not contain any fermions or gauge fields. In this model, due to a Coleman–Weinberg-like mechanism, the one-scalar field spontaneously breaks the $ \mathbb{Z}_2$ symmetry with a vacuum expectation value connected with the cutoff momentum. We investigate this using the one-loop effective potential, renormalization group and large-$N$ limit. We also investigate whether it is possible to reproduce the mass term and vacuum expectation value of the Higgs field by coupling this model with the standard model in the Higgs portal framework. In this case, the one-scalar field that does not break $\mathbb{Z}_2$ can be a candidate for dark matter and have a mass of about several TeV in appropriate parameters. On the other hand, the other scalar field breaks $\mathbb{Z}_2$ and has a mass of several tens of GeV. These results will be verifiable in near-future experiments.

scholarly journals The one-loop tadpole in the geoSMEFT

2021 ◽  
Vol 11 (5) ◽  
Author(s):  
Tyler Corbett
Keyword(s):  
Field Theory ◽  
Standard Model ◽  
Effective Field Theory ◽  
Effective Field ◽  
Power Counting ◽  
Leading Order ◽  
The Standard Model ◽  
The One ◽  
Near Future ◽  
Geometric Formulation

Making use of the geometric formulation of the Standard Model Effective Field Theory we calculate the one-loop tadpole diagrams to all orders in the Standard Model Effective Field Theory power counting. This work represents the first calculation of a one-loop amplitude beyond leading order in the Standard Model Effective Field Theory, and discusses the potential to extend this methodology to perform similar calculations of observables in the near future.

ONE LOOP-INDUCED WZH COUPLING IN THE TWO HIGGS DOUBLET MODEL

1989 ◽  
Vol 04 (28) ◽  
pp. 2757-2766 ◽  
Author(s):  
THOMAS G. RIZZO
Keyword(s):  
Standard Model ◽  
Higgs Doublet ◽  
New Physics ◽  
Tree Level ◽  
Beyond The Standard Model ◽  
The Standard Model ◽  
Charged Higgs ◽  
Doublet Model ◽  
The One ◽  
Two Higgs Doublet Model

Although absent at the tree level in models with only doublet and singlet Higgs representations, the WZH coupling can be induced at the one-loop level. We examine the size of this induced coupling in the two Higgs doublet model due to fermion as well as Higgs/gauge boson loops. Such couplings could provide a new mechanism for charged Higgs production at colliders and are ‘backgrounds’ to new physics beyond the Standard Model. We find, however, that these couplings are very weak for all regions of the parameter space explored.

Trends and Developments in Higher Education in the Asia-Pacific Region

2016 ◽  
Author(s):  
John N. Hawkins
Keyword(s):  
Higher Education ◽  
Tertiary Education ◽  
National Development ◽  
Asia Pacific ◽  
Pacific Region ◽  
Asia Pacific Region ◽  
Forthcoming Article ◽  
Making Sense ◽  
Research And Innovation ◽  
The One

This is an advance summary of a forthcoming article in the Oxford Research Encyclopedia of Education. Please check back later for the full article. The demographic, historical, cultural, and political-economic complexity of the vast Asia Pacific Region poses a great challenge to making sense of the region’s higher education (HE) trends. Yet, several of these trends are indeed enduring and comparable. The interplay of these trends and developments continually shape the architecture of higher education in the region. A sampling of these trends focuses on one of the basic frames of higher education, namely that of increasing access, equity, and capacity. This, in turn, has led to the tension between massification on the one hand, and issues of quality assurance on the other. While national development is often the primary goal of tertiary education, regionalism has increasingly challenged these more parochial concerns. Within the region, student and faculty mobility, migration, and internationalization have emerged with greater force within the sometimes confusing context of globalization. At the upper end of the HE spectrum, the pressure of seeking to achieve excellence in research and innovation has resulted in another predicament, leading to what might be called an accelerated academy. These forces and factors, among others, are influencing the pathway of HE in the Asia Pacific region as we move into the 21st century.

scholarly journals A Generic Framework for Accountable Optimistic Fair Exchange Protocol

Symmetry ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 285
Author(s):  
Jia-Ch’ng Loh ◽  
Swee-Huay Heng ◽  
Syh-Yuan Tan
Keyword(s):  
Standard Model ◽  
Random Oracle Model ◽  
Building Blocks ◽  
Random Oracle ◽  
Fair Exchange ◽  
Generic Framework ◽  
The Standard Model ◽  
Security Properties ◽  
Optimistic Fair Exchange ◽  
The One

Optimistic Fair Exchange protocol was designed for two parties to exchange in a fair way where an arbitrator always remains offline and will be referred only if any dispute happens. There are various optimistic fair exchange protocols with different security properties in the literature. Most of the optimistic fair exchange protocols satisfy resolution ambiguity where a signature signed by the signer is computational indistinguishable from the one resolved by the arbitrator. Huang et al. proposed the first generic framework for accountable optimistic fair exchange protocol in the random oracle model where it possesses resolution ambiguity and is able to reveal the actual signer when needed. Ganjavi et al. later proposed the first generic framework in the standard model. In this paper, we propose a new generic framework for accountable optimistic fair exchange protocol in the standard model using ordinary signature, convertible undeniable signature, and ring signature scheme as the underlying building blocks. We also provide an instantiation using our proposed generic framework to obtain an efficient pairing-based accountable optimistic fair exchange protocol with short signature.

scholarly journals THE UNIT OF ELECTRIC CHARGE AND THE MASS HIERARCHY OF HEAVY PARTICLES

2007 ◽  
Vol 22 (38) ◽  
pp. 2909-2916
Author(s):  
G. LÓPEZ CASTRO ◽  
J. PESTIEAU
Keyword(s):  
Standard Model ◽  
Mass Hierarchy ◽  
Empirical Formulas ◽  
Heavy Particles ◽  
The Standard Model ◽  
Experimental Values ◽  
The One ◽  
Simple Ratio ◽  
The Masses ◽  
Good Agreement

We propose some empirical formulas relating the masses of the heaviest particles in the standard model (the W, Z, H bosons and the t quark) to the charge of the positron e and the Higgs condensate v. The relations for the masses of gauge bosons mW = (1+e)v/4 and [Formula: see text] are in good agreement with experimental values. By requiring the electroweak standard model to be free from quadratic divergences at the one-loop level, we find: [Formula: see text] and [Formula: see text], or the very simple ratio (mt/mH)2 = e.

scholarly journals ELECTROWEAK QUARK–LEPTON SYMMETRY AND WEAK TOPOLOGICAL-CHARGE CONFINEMENT IN THE STANDARD MODEL WITH DIRAC NEUTRINOS

2007 ◽  
Vol 22 (21) ◽  
pp. 3669-3691 ◽  
Author(s):  
ERNESTO A. MATUTE
Keyword(s):  
Standard Model ◽  
Topological Charge ◽  
Additive Group ◽  
Weak Field ◽  
Anomaly Cancellation ◽  
Charge Quantization ◽  
Lepton Charge ◽  
The Standard Model ◽  
The One ◽  
Electroweak Model

The standard electroweak model with Dirac neutrinos is extended by way of the principles of electroweak quark–lepton symmetry and weak topological-charge confinement to account for quark–lepton charge relations which, if not accidental, are indicative of charge structures. A mixing in quarks and leptons of underlying integer local charges with integer weak topological charges associated with an additive group Z3, fixed by the anomaly cancellation requirement, is discussed. It is found that the electroweak difference between topological quarks and leptons is the nonequivalence between the topological vacua of their weak field configurations, produced by a four-instanton which carries the topological charge, induces the universal fractional piece of charge distinguishing quarks from leptons, and breaks the underlying symmetry. The constituent quarks of the standard model appear as coming from topological quarks, via the weak four-instanton event. Dual transitions occur for leptons. It is shown that several other fundamental problems left open in the standard electroweak model with Dirac neutrinos are solved: the one-to-one correspondence between quark and lepton flavors, the existence of three generations, the conservation and ungauging of B-L, the electric charge quantization, and the confinement of fractional electric charges.

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