L E P T O N e m a n u e l d i m a s d e m e l o p i m e n t a c o n c e r t | w o r l d p r e m i è r e A R C H E T I M E | n e w y o r k | j u n e 1 4 2 0 0 9 354 West 45th St | New York | NY 10036


Leptons are a family of elementary particles, alongside quarks and gauge bosons (also known as force carriers). Like quarks, leptons are fermions (spin-1/2 particles) and are subject to the electromagnetic force, the gravitational force, and weak interaction. But unlike quarks, leptons do not participate in the strong interaction. There are six flavours of leptons, forming three generations. The first generation is the electronic leptons, comprising the electrons, and electron neutrinos; the second is the muonic leptons, comprising muons, and muon neutrinos; and the third is the tauonic leptons, comprising tauons, and tauon neutrinos. Each lepton has a corresponding antiparticle - these antiparticles are known as antileptons. Leptons are an important part of the Standard Model, especially the electrons which are one of the components of atoms, alongside protons and neutrons. Exotic atoms with muons and tauons instead of electrons can also be synthesized.



Dos observaciones quiero agregar: una sobre la naturaleza del Aleph; otra, sobre su nombre. Éste, como es sabido, es el de la primera letra del alfabeto de la lengua sagrada. Su aplicación al círculo de mi historia no parece casual. Para la Cábala esa letra significa el En Soph, la ilimitada y pura divinidad; también se dijo que tiene la forma de un hombre que señala el cielo y la tierra, para indicar que el mundo inferior es el espejo y es el mapa del superior; para la Mengenlehre, es el símbolo de los números transfinitos, en los que el todo no es mayor que alguna de las partes. Yo querría saber: ¿Eligió Carlos Argentino ese nombre, o lo leyó, aplicado a otro punto donde convergen todos los puntos, en alguno de los textos innumerables que el Aleph de su casa le reveló? Por increíble que parezca yo creo que hay (o que hubo) otro Aleph, yo creo que el Aleph de la calle Garay era un falso Aleph.
Jorge Luis Borges (el Aleph)



Curator: Olga Ast

ArcheTime: Cross-Disciplinary Conference and Exhibition on Time dedicated to the exploration of differences and synchronicities between artistic, academic and scientific concepts of Time.


SUNDAY, JUNE 14, 2009
7:00 pm - 10:00 pm
Exhibition Closing Party and Performance Night

more about Emanuel Dimas de Melo Pimenta

8:00 pm - 9:00 pm. Performances

Conference: June 6 - 7, 2009
Exhibition: June 4 - 14, 2009
ArcheTime conference and art exhibition aims to foster critical discourse between artistic, academic and scientific thought on Time. We endeavor to examine and compare the various models of Time that have been suggested across disciplinary boundaries. We invite participants from these divergent disciplines to come together and share their visions of Time in the spirit of multi-disciplinary collaboration and the search for new perspectives

Black Hole-Powered Jet of Electrons and Sub-Atomic Particles Streams From Center of Galaxy M87
Credit: NASA and The Hubble Heritage Team (


Simplicity and subtleness of the first sounds in this composition announce the dissipation in complex systems, as a reflection on time.

Emanuel Dimas de Melo Pimenta



Lepton era: The interval, commencing about 10-5 s after the Big Bang, in which the various kinds of lepton were the main contributors to the density of the Universe. Pairs of leptons and antileptons were created in large numbers in the early Universe but, as the Universe cooled, most lepton species were annihilated. The lepton era immediately followed the hadron era, and is a subdivision of the radiation era. The end of the lepton era is usually taken to have occurred when most electron–positron pairs were annihilated, at a temperature of 5 × 109 K, about 1 second after the Big Bang.

A Dictionary of Astronomy | 1997 | © A Dictionary of Astronomy 1997, originally published by Oxford University Press 1997







many thanks to Doru Paul Mugur








  George Musser, Daniel Rosenberg, Alexei Sharov, Vera Zolberg, Olga Ast, Matvei Yankelevich, Daniil Kharms, Alexander Vvedensky, Ken Jacobs, Richard Leslie, Jesse Stewart, Tatyana Tenenbaum, Paul Doru Mugur, Costica Bradatan, Andrea Liu, Anna Lundh, Mary O' Neill, Gary Nickard, Jeremy Levine, Christian Friedrich, Robert Gibbons, Ilya Bernstein, Craig Morehead, Jacques Laroche, Bianca Bibiloni, Max Bondi, Stephen Hastings-King, Sarah Slifer, Hye Yeon Nam, Emanuel Dimas de Melo Pimenta.