Last update: 16.01.2015

This website is an international forum for information exchange among scientists working on mathematical, conceptual, and constructive problems in local relativistic quantum physics (LQP). The aim is to gather as much LQP-related information as possible in one place. This documentation page explains the features of

Retrieving information from lqp2

Providing/sharing information with the LQP community

Technical aspects

Administrative aspects

Retrieving information from lqp2

The information on lqp2 is public, anybody can see it without need to register or to log in. The main pages of lqp2 can be accessed via the navigation bar


Searching the papers database

Under the item "Papers" in the navigation bar you can access the collection of all preprints/articles linked to lqp2. On the first page, you find an anti chronological list of all papers, like for example this one:

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  • Clicking on the title of the paper brings you to a more detailed view of this entry, including an abstract and a bibtex link.
  • The date is the publication date (not the date the article was linked to lqp2); in many cases, this is the date when the article was published on the arXiv.
  • In the author list, clicking a name brings up a list of all papers by that author which are available on lqp2.
  • The head symbol next to the author names indicates if the author is a registered lqp2 user (black) or not (gray). Clicking a black head brings you to the user page of that user.
  • In gray italics you find a list of keywords associated with that paper. Clicking on such a keyword brings up a list of all papers on lqp2 which have that keyword associated with them.
  • The "open access link" is a link to a website where the article is freely available (in most cases arXiv or project euclid), and the button with the publication metadata links to that paper on the journal's website.

To search for papers, you have two possibilities:

  • You can enter your search query into the field at the top of the page. Pressing enter will search for these words in any of the fields title, abstract, author, keywords (currently not in the date field, this is work in progress). So searching "borchers" will return all papers by Borchers, but also all papers where his name is mentioned in the title or abstract, or in a keyword. You can also type several words like "borchers geometric modular action", etc. Currently it is necessary to provide complete words, i.e. searching for example "modula" does not return anything.
  • [[{"type":"media","view_mode":"media_large","fid":"114625","attributes":{"alt":"","class":"media-image","height":"145","style":"width: 153px; height: 145px; float: right;","typeof":"foaf:Image","width":"153"}}]]As a second possibility for searching, you can use the three blocks keyword", "author", "date", in the right sidebar. Selecting items from these blocks will narrow down your search correspondingly, i.e. if you have searched for "borchers", you can reduce the number of returned papers by requiring matches with a certain keyword, author, and/or date. Selected items can also be removed from the filter by clicking the "-" sign next to them, as shown in the picture on the right.



Searching the bibliography

Under the item "Bibliography" in the navigation bar, you find the Bibliography page, listing text books in the field of LQP. You can sort by different criteria by clicking on the column headers. By clicking the title of a book you can also add comments (when logged in), in particular for pointing out errors found in the book.

Looking up events

Under the item "Events" in the navigation bar, you find the Events page, listing upcoming events (conferences, workshops, symposia ...) in the field of LQP. By default, the list is sorted by date, but by clicking the headers of the individual columns, you can also sort it by location or title. The RSS link in the lower right corner of the list allows you to subscribe to an RSS feed of all events submitted to lqp2. There is also an up to date ical file to which you can link in your organizer software:

If you let the mouse cursor rest on "Events" in the navigation bar, you also find links to a calendar of the current month with all submitted LQP events in this month displayed, and a link "Archive" to a list of past events.

Looking up job announcements

Under the item "Jobs" in the navigation bar, you find the Jobs page, listing open job announcements in the field of LQP.

Retrieving information on LQP researchers

Under the item "People" in the navigation bar, you find the People page, listing all registered users of lqp2. Note that this list does not contain all researchers working in local quantum physics, but only those who registered to lqp2. In case you are a researcher with interest in LQP, please consider to register

On the people page, you can sort the list of registered users by name or affiliation (default). Clicking on a name leads you to the user page of that user (»editing your own user page). The correctness and amount of information displayed on the user pages is in the responsibility of the individual users, please contact them directly in case you have a question. 

Clicking an institution will bring up a page with the list of lqp2 users affiliated with it.

Providing/sharing information with the LQP community

[[{"type":"media","view_mode":"media_large","fid":"114621","attributes":{"alt":"","class":"media-image","height":"241","style":"width: 146px; height: 241px; float: right; ","typeof":"foaf:Image","width":"146"}}]]The general idea of lqp2 is that every registered user can add content to the site, i.e. post articles, announce conferences or jobs, etc.  It is not necessary to contact an administrator to add content, you can do this directly and on your own. To be able to add content to lqp2, you need to create an account and log in. We encourage everybody with an interest in LQP to do so and share LQP-related information on this website. Adding information is done by using the "add new content" menu in the left side bar which is visible only after logging in. 

All new content (like articles, conference or job announcements, or text books for the bibliography section) will be immediately published on


Linking preprints and articles

The papers section of aims to gather all research articles relevant to local quantum physics. This includes preprints as well as published articles of any date. Note that adding preprints or articles to lqp2 does not imply any form of copyright transfer and/or infringement. The articles are only linked, to access them you will be redirected to the corresponding arxiv/journal/preprint website. 

Currently there are two different methods available for adding articles to the lqp2 database:

Paper (import), the first item in the add new content menu, gives you the option to import a preprint from To do so, all you need to have is the arXiv identifier - i.e. the code like 1012.1454 or math-ph/0203021 which you can obtain from After clicking on "Paper (import)", paste that code into the field provided, then click the button "Get Information from arXiv" and you will be redirected to a page with the information retrieved from arXiv. To make this entry for both useful and pretty, please also provide suitable keywords in the keywords field (you will see a list of keywords already used on lqp2 once you start typing), and in case there is $\LaTeX$ code in the title or abstract, please wrap it in dollar signs to make for example \$S=J\Delta^{1/2}\$ look like $S=J\Delta^{1/2}$ (» Using $\LaTeX$ on lqp2). 

After clicking "Save" at the very bottom of the page the new entry will be saved and added to lqp2.

Paper (manual), the second item in the add new content menu, is for adding articles which are not available on Clicking that link will bring up the "Create Paper" page, in which you can enter the metadata of the article. The fields title, authors, abstract, keywords are self-explanatory. The other ones mean

open access link a url to a website where the article is available, for example a link to project euclid.
publication date the date when the article was published (not the date when it was added to lqp2)
publication info the journal publication metadata, for example "Lett. Math. Phys. 101 (2012), 341-354".
DOI the digital object identifier, i.e. something like 10.1007/s00220-011-1268-z. This number is used to generate a link to the article on the journal's website.


There is also the option to upload a pdf file.

Adding text books to the bibliography

The bibliography section of lqp2 lists text books relevant to the subject. To add books to this list, click "Book" in the add new content menu. On the "Create Book" page which opens up, you can provide the details of this book - title, author, publication year, publisher. If a free link to the book exists, you can also provide that. Clicking "save" at the bottom of the page submits this book to lqp2.

Announcing conferences/workshops

In case you know of an event (conference, workshop, symposium ...) or even host it, please share this information with the LQP community. To do so, click "Event" in the add new content menu, and fill in the details on the "Create Event" page which opens up. In any case, provide the title of the event, its location ("place") and the date. Check the box "Show end date" if the event lasts more than one day. When available, also provide an url to the event website under "Homepage". The field "additional information" can usually be left blank. Then press "Save" to submit this event to lqp2.

Addings slides of talks

You can add the slides of a talk by uploading a pdf file or by providing a link. In the add new content menu, choose "Slides". Here, you can also provide a reference to the event at which the talk was given, as well as one or several papers which are relevant for  the talk. Your slides will be displayed on

  • your user profile (accessible via the People list)
  • the event page (accessible via Events->Archive)
  • below all referenced papers.

Announcing job openings

If you know of a job opening in the field of LQP, please share this information with the LQP community. To do so, click "Job" in the add new content menu, and fill in the details on the "Create Job" page which opens up. In any case, provide the title of the job, a link ("joblink") to a website with detailed information, its location ("place"), and the deadline for the application. Then press "Save" to submit this job announcement to lqp2.

Providing information about yourself

Any registered user of lqp2 has a user page on which he/she can provide information about him/herself. To see your user page, log in and then click on "my account" in the very upper right corner of the website, or here. The user page has an "Edit" button which you can use if you want to change it. You can change your user name, password, email address, and affiliation. We encourage all users to provide their real full name in the field "full name" to guarantee the scientific quality of lqp2.

Optionally, you can also provide a link to your home page, a photo of yourself, and a free text which will be written under the heading "about me" on your user page. In this text, you can describe your research interests or contact details as you see fit.

The content and timeliness of the user pages is the responsibility of the individual users.

Technical aspects

Using $\LaTeX$ on lqp2

Thanks to mathjax, $\LaTeX$ as you know and love it can be used everywhere on lqp2. If you want to enter $\LaTeX$ expressions, be it in an article title, abstract, forum post, book entry, chat, or anywhere else, just type $\LaTeX$ command as you know them and wrap them in dollar signs. For example, \$SA\Omega=A^*\Omega\$ looks like $SA\Omega=A^*\Omega$ then. If you wrap an expression in double dollar signs or use $\backslash[\ldots\!\backslash]$, you get a centered formula like $$i\hbar \frac{d\psi(t)}{dt}=H\psi(t).$$

Development of lqp2

lqp2 is still under development, and we are always looking for new developers. There are several ways how you can contribute: By actual website development (with some knowledge of PHP, HTML, CSS), by contributing to the website design, by writing documentation, by simply pointing out bugs in the current implementation (use to report the problem you encountered), or by submitting wishes on different/new featurses in the forum. In case you want to be involved with lqp2 development please write an email.

Administrative aspects

Making your email visible

In your account settings (top right of the page -> My account) you have the option to set the flag "Make E-mail visible". If you set this flag, your email is visible for registered lqp2-users on the people page. For other users your email is not visible. By default, this flag is not set.

Contacting the administrators

If you have any questions about your account or lqp2 in general, please use this link to contact the administrators.