3,867 research outputs found
Maintaining Gauge Symmetry in Renormalizing Chiral Gauge Theories
It is known that the scheme of Breitenlohner and Maison (BM) in
dimensional regularization requires finite counter-term renormalization to
restore gauge symmetry and implementing this finite renormalization in
practical calculation is a daunting task even at 1-loop order. In this paper,
we show that there is a simple and straightforward method to obtain these
finite counter terms by using the rightmost scheme in which we
move all the matrices to the rightmost position before
analytically continuing the dimension. For any 1-loop Feynman diagram, the
difference between the amplitude regularized in the rightmost
scheme and the amplitude regularized in the BM scheme can be easily calculated.
The differences for all 1-loop diagrams in the chiral Abelian-Higgs gauge
theory and in the chiral non-Abelian gauge theory are shown to be the same as
the amplitudes due to the finite counter terms that are required to restore
gauge symmetry
A hybrid algorithm for the single-machine total tardiness problem
2008-2009 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe
From Auditable Quantum Authentication to Best-of-Both-Worlds Multiparty Quantum Computation with Public Verifiable Identifiable Abort
We construct the first secure multiparty quantum computation with public
verifiable identifiable abort (MPQC-PVIA) protocol, where PVIA security enables
outside observers with only classical computational power to agree on the
identity of a malicious party in case of an abort. Moreover, our MPQC is the
first quantum setting to provide Best-of-Both-Worlds (BoBW) security, which
attains full security with an honest majority and is secure with abort if the
majority is dishonest. At the heart of our construction is a generic
transformation called Auditable Quantum Authentication (AQA) that publicly
identifies the malicious sender with overwhelming probability. Our approach
comes with several advantages over the traditional way of building MPQC
protocols. First, instead of following the Clifford code paradigm, our protocol
can be based on a variety of authentication codes. Second, the online phase of
our MPQC requires only classical communications. Third, our construction can
achieve distributed computation via a carefully crafted protocol design, which
can be adjusted to an MPQC that conditionally guarantees output delivery
NeuO for Neuronal Labeling in Zebrafish
10.18383/j.tom.2015.00127Tomography1130-3
QCD sum rule studies on the tetraquark states with
We apply the method of QCD sum rules to study the structure newly
observed by the BESIII Collaboration in the mass spectrum in
2.0-2.1 GeV region in the decay. We
construct all the tetraquark currents with , and use them to perform QCD sum rule analyses. One current leads to
reliable QCD sum rule results and the mass is extracted to be
GeV, suggesting that the structure can be
interpreted as an tetraquark state with .
The can be interpreted as its partner having
, and we propose to search for the other two partners, the tetraquark states with and , in the
, , and
mass spectra.Comment: 8 pages, 5 figures, 1 table, suggestions and comments are welcom
Protein tyrosine phosphatase non-receptor type 2 as the therapeutic target of atherosclerotic diseases: past, present and future
Tyrosine-protein phosphatase non-receptor type 2(PTPN2), an important member of the protein tyrosine phosphatase family, can regulate various signaling pathways and biological processes by dephosphorylating receptor protein tyrosine kinases. Accumulating evidence has demonstrated that PTPN2 is involved in the occurrence and development of atherosclerotic cardiovascular disease. Recently, it has been reported that PTPN2 exerts an anti-atherosclerotic effect by regulating vascular endothelial injury, monocyte proliferation and migration, macrophage polarization, T cell polarization, autophagy, pyroptosis, and insulin resistance. In this review, we summarize the latest findings on the role of PTPN2 in the pathogenesis of atherosclerosis to provide a rationale for better future research and therapeutic interventions
Dimensionality-confined superconductivity within SrNbO3-SrTiO3 heterostructures
Interfaces between transition-metal oxides are able to host two-dimensional
electron gases (2DEGs) and exhibit exotic quantum phenomena. Here we report the
observation of superconductivity below 230 mK for the heterostructure composed
of SrNbO3 (SNO) and SrTiO3 (STO). Different from some other counterparts with
two insulators, the metallic SNO provides a novel mechanism to form a quasi
2DEG by charge transfer from bulk towards interface under strain. The
superconductivity, residing within the strained SNO layer near the interface,
is contributed by an electron system with record-low carrier density. Notably,
although embedded in a normal metallic layer with a carrier density 4 to 5
orders higher, the electron system is still uniquely well-protected to retain
high mobility and lies deep in extreme quantum regime
Make Caffeine Visible: a Fluorescent Caffeine "Traffic Light" Detector
Caffeine has attracted abundant attention due to its extensive existence in beverages and medicines. However, to detect it sensitively and conveniently remains a challenge, especially in resource-limited regions. Here we report a novel aqueous phase fluorescent caffeine sensor named Caffeine Orange which exhibits 250-fold fluorescence enhancement upon caffeine activation and high selectivity. Nuclear magnetic resonance spectroscopy and Fourier transform infrared spectroscopy indicate that ??-stacking and hydrogen-bonding contribute to their interactions while dynamic light scattering and transmission electron microscopy experiments demonstrate the change of Caffeine Orange ambient environment induces its fluorescence emission. To utilize this probe in real life, we developed a non-toxic caffeine detection kit and tested it for caffeine quantification in various beverages. Naked-eye sensing of various caffeine concentrations was possible based on color changes upon irradiation with a laser pointer. Lastly, we performed the whole system on a microfluidic device to make caffeine detection quick, sensitive and automated.open5
- …