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One of the open challenges in fundamental physics is to combine
Einstein's theory of general relativity with the principles of
quantum mechancis. In this thesis, the question is raised whether
metric quantum gravity could be fundamental in the spirit of Steven
Weinberg's seminal asymptotic safety conjecture, and if so, what
are the consequences for the physics of small, possibly Planck-size
black holes? To address the first question, new techniques are
provided which allow, for the first time, a self-consistent study
of high-order polynomial actions including up to 34 powers in the
Ricci scalar. These novel insights are then exploited to explain
quantum gravity effects in black holes, including their horizon and
causal structure, conformal scaling, evaporation, and the
thermodynamics of quantum space-time. Results indicate upper limits
on black hole temperature, and the existence of small black holes
based on asymptotic safety for gravity and thermodynamical
arguments.
One of the open challenges in fundamental physics is to combine
Einstein's theory of general relativity with the principles of
quantum mechancis. In this thesis, the question is raised whether
metric quantum gravity could be fundamental in the spirit of Steven
Weinberg's seminal asymptotic safety conjecture, and if so, what
are the consequences for the physics of small, possibly Planck-size
black holes? To address the first question, new techniques are
provided which allow, for the first time, a self-consistent study
of high-order polynomial actions including up to 34 powers in the
Ricci scalar. These novel insights are then exploited to explain
quantum gravity effects in black holes, including their horizon and
causal structure, conformal scaling, evaporation, and the
thermodynamics of quantum space-time. Results indicate upper limits
on black hole temperature, and the existence of small black holes
based on asymptotic safety for gravity and thermodynamical
arguments.
"For an engineer determined to refine and secure Internet operation
or to explore alternative solutions to persistent problems, the
insights provided by this book will be invaluable." -Vint Cerf,
Internet pioneer TCP/IP Illustrated, Volume 1, Second Edition, is a
detailed and visual guide to today's TCP/IP protocol suite. Fully
updated for the newest innovations, it demonstrates each protocol
in action through realistic examples from modern Linux, Windows,
and Mac OS environments. There's no better way to discover why
TCP/IP works as it does, how it reacts to common conditions, and
how to apply it in your own applications and networks. Building on
the late W. Richard Stevens' classic first edition, author Kevin R.
Fall adds his cutting-edge experience as a leader in TCP/IP
protocol research, updating the book to fully reflect the latest
protocols and best practices. He first introduces TCP/IP's core
goals and architectural concepts, showing how they can robustly
connect diverse networks and support multiple services running
concurrently. Next, he carefully explains Internet addressing in
both IPv4 and IPv6 networks. Then, he walks through TCP/IP's
structure and function from the bottom up: from link layer
protocols-such as Ethernet and Wi-Fi-through network, transport,
and application layers. Fall thoroughly introduces ARP, DHCP, NAT,
firewalls, ICMPv4/ICMPv6, broadcasting, multicasting, UDP, DNS, and
much more. He offers extensive coverage of reliable transport and
TCP, including connection management, timeout, retransmission,
interactive data flow, and congestion control. Finally, he
introduces the basics of security and cryptography, and illuminates
the crucial modern protocols for protecting security and privacy,
including EAP, IPsec, TLS, DNSSEC, and DKIM. Whatever your TCP/IP
experience, this book will help you gain a deeper, more intuitive
understanding of the entire protocol suite so you can build better
applications and run more reliable, efficient networks.
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