A report on magnetic monopole from scientists of Stanford and Fudan

Inducing a Magnetic Monopole with Topological Surface States

abstract:

Existence of the magnetic monopole is compatible with the fundamental laws of nature;
however, this elusive particle has yet to be detected experimentally. We show theoretically that an
electric charge near a topological surface state induces an image magnetic monopole charge due
to the topological magneto-electric effect. The magnetic field generated by the image magnetic
monopole may be experimentally measured, and the inverse square law of the field dependence
can be determined quantitatively. We propose that this effect can be used to experimentally realize
a gas of quantum particles carrying fractional statistics, consisting of the bound states of the
electric charge and the image magnetic monopole charge.

发表在Feb.26的science上,还没仔细看,不知道是不是突破性的。

下载pdf

abs小试牛刀

论坛里一直有这种声音,arch的abs(arch build system)编译软件的成功率很高,刚才用firefox-3.0.6小试牛刀,果然强大,编译成功率应该比传统的./configure, make, make install 高。

这是abs的wiki页面:

http://wiki.archlinux.org/index.php/ABS_(%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87)#.

E7.BC.96.E8.AF.91.E5.AE.89.E8.A3.85.E8.BF.87.E7.A8.8B.EF.BC.8C.

E4.BC.A0.E7.BB.9F.E6.96.B9.E6.B3.95

照做即可,编译的时候可能会有提示:

xxx command not found

执行以下指令更新并安装软件包即可:

#sudo pacman -Sy xxx

 

另外可以用yaourt这个工具,是makepkg的半自动化实现。

成功装上xp arch双系统

昨天装上了双系统:windows xp+archlinux.今天写一下过程。

分区方案参考了这篇文章:

http://dev.misuland.com/20080327/1206615299784.html

 

基本上按wiki上的新手指南可以完成基本系统及桌面的安装与配置:

http://wiki.archlinux.org/index.php/%E6%96%B0%E6%89%8B%E6%8C%87%E5%8D%97_(%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87)

在设置pppoe拨号是,连接成功后可能无法上网,试试以下命令:

#route add default dev ppp0