User profiles for C. L. Cesar

Claudio Lenz Cesar

- Verified email at if.ufrj.br - Cited by 7611

Carlos Lenz Cesar

- CL Cesar - Verified email at ifi.unicamp.br - Cited by 5424

[HTML][HTML] Production and detection of cold antihydrogen atoms

…, G Bonomi, A Bouchta, P Bowe, C Carraro, CL Cesar… - Nature, 2002 - nature.com
A theoretical underpinning of the standard model of fundamental particles and interactions
is CPT invariance, which requires that the laws of physics be invariant under the combined …

Trapped antihydrogen

…, W Bertsche, PD Bowe, E Butler, CL Cesar… - Nature, 2010 - nature.com
Antimatter was first predicted 1 in 1931, by Dirac. Work with high-energy antiparticles is now
commonplace, and anti-electrons are used regularly in the medical technique of positron …

Optical tweezers for measuring red blood cell elasticity: application to the study of drug response in sickle cell disease

…, LC Barbosa, FF Costa, CL Cesar… - European journal of …, 2003 - Wiley Online Library
The deformability of erythrocytes is a critical determinant of blood flow in microcirculation. By
capturing red blood cells (RBC) with optical tweezers and dragging them through a viscous …

Resonant quantum transitions in trapped antihydrogen atoms

…, W Bertsche, PD Bowe, E Butler, A Capra, CL Cesar… - Nature, 2012 - nature.com
The hydrogen atom is one of the most important and influential model systems in modern
physics. Attempts to understand its spectrum are inextricably linked to the early history and …

[HTML][HTML] Observation of the 1S–2S transition in trapped antihydrogen

…, W Bertsche, E Butler, A Capra, C Carruth, CL Cesar… - Nature, 2017 - nature.com
The spectrum of the hydrogen atom has played a central part in fundamental physics over
the past 200 years. Historical examples of its importance include the wavelength …

[HTML][HTML] Electrical properties of the red blood cell membrane and immunohematological investigation

HP Fernandes, CL Cesar… - Revista brasileira de …, 2011 - SciELO Brasil
Hemagglutination is widely used in transfusion medicine and depends on several factors
including antigens, antibodies, electrical properties of red blood cells and the environment of …

[HTML][HTML] Observation of the effect of gravity on the motion of antimatter

…, NM Bhatt, G Bonomi, A Capra, I Carli, CL Cesar… - Nature, 2023 - nature.com
Einstein’s general theory of relativity from 1915 1 remains the most successful description of
gravitation. From the 1919 solar eclipse 2 to the observation of gravitational waves 3, the …

[HTML][HTML] Characterization of the 1S–2S transition in antihydrogen

…, CJ Baker, W Bertsche, A Capra, C Carruth, CL Cesar… - Nature, 2018 - nature.com
In 1928, Dirac published an equation 1 that combined quantum mechanics and special
relativity. Negative-energy solutions to this equation, rather than being unphysical as initially …

Two-photon spectroscopy of trapped atomic hydrogen

CL Cesar, DG Fried, TC Killian, AD Polcyn… - Physical review …, 1996 - APS
We report observation of the 1S-2S two-photon transition in hydrogen confined in a magnetic
trap at submillikelvin temperatures. The excitation spectrum can display a sharp central …

[HTML][HTML] Roadmap for optical tweezers

…, WL Moreira, A Fontes, CL Cesar… - Journal of Physics …, 2023 - iopscience.iop.org
Optical tweezers are tools made of light that enable contactless pushing, trapping, and
manipulation of objects, ranging from atoms to space light sails. Since the pioneering work by …