224 research outputs found
Quantization of fields based on Generalized Uncertainty Principle
We construct a quantum theory of free scalar field in 1+1 dimensions based on
a `Generalized Uncertainty Principle'. Both canonical and path integral
formalism are employed. Higher dimensional extension is easily performed in the
path integral formalism.Comment: 17pages, 2figure
Improved Renormalization Group analysis for Yang-Mills theory
We apply an improved renormalization group analysis for pure Yang-Mills
theory at one loop order and obtained the result that a non-perturbatively
generated pole mass of gluon emerges as , where
is the -bar scale.Comment: 1+16 pages, 3 figures; ver 2, typos corrected, and some comments and
references added; ver 3, some sentences corrected, a figure replaced and a
number corrected; ver 4, in sec 2, the derivation of the main formula is
refined, final version to appear in Prog.Theor.Phy
Gravitational string-membrane hedgehog and internal structure of black holes
We investigate charged Nambu-Goto strings/membrane systems in the
Einstein-Maxwell theory in 3+1 dimensions. We first construct a charged string
hedgehog solution that has a single horizon and conical singularity. Then we
examine a charged membrane system, and give a simple derivation of its self
energy. We find that the membrane may form an extremal Reissner-Nordstrom black
hole, but its interior is a flat spacetime. Finally by combining the charged
strings and the membrane we construct black hole solutions that have no
singularities inside the horizons. We study them in detail by varying the
magnitude of the two parameters, namely, the charge times the membrane tension
and the string tension. We also argue that the strings have, due to the large
redshift inside the system, a fair amount of degrees of freedom that may
explain the entropy of the corresponding black holes.Comment: 22 pages, 13 figures, minor revisions, version published in PT
String creation in D6-brane background
The production of string charge during a crossing of certain oriented
D-branes is studied. We compute the string charge in the system of a probe
D2-brane and a background D6-brane by use of the equations of motion in the
ten-dimensions. We confirm the creation of string charge as inflow from the
background D6-brane.Comment: 11 pages, 1 figure, typos correcte
Geometric cross sections of rotating strings and black holes
Toshihiro Matsuo and Kin-ya Oda. Geometric cross sections of rotating strings and black holes. Phys. Rev. D 79, 026003, 2009. https://doi.org/10.1103/PhysRevD.79.026003
Enhancing the Driver's Comprehension of ADS's System Limitations: An HMI for Providing Request-to-Intervene Trigger Information
Level 3 automated driving systems (ADS) have attracted significant attention
and are being commercialized. A Level 3 ADS prompts the driver to take control
by requesting to intervene (RtI) when its operational design domain (ODD) or
system limitations are exceeded. However, complex traffic situations may lead
drivers to perceive multiple potential triggers of RtI simultaneously, causing
hesitation or confusion during take-over. Therefore, drivers must clearly
understand the ADS's system limitations to understand the triggers of RtI and
ensure safe take-over. In this study, we propose a voice-based HMI for
providing RtI trigger cues to help drivers understand ADS's system limitations.
The results of a between-group experiment using a driving simulator showed that
incorporating effective trigger cues into the RtI enabled drivers to comprehend
the ADS's system limitations better and reduce collisions. It also improved the
subjective evaluations of drivers, such as the comprehensibility of system
limitations, hesitation in response to RtI, and acceptance of ADS behaviors
when encountering RtI while using the ADS. Therefore, enhanced comprehension
resulting from trigger cues is essential for promoting a safer and better user
experience using ADS during RtI
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